| Base | Representation |
|---|---|
| bin | 1001100100000011011100… |
| … | …10101100100111001010000 |
| 3 | 2202110110010121221021100220 |
| 4 | 10302001232111210321100 |
| 5 | 10224023430310443440 |
| 6 | 112421015333113040 |
| 7 | 4300240164232320 |
| oct | 462015625447120 |
| 9 | 82413117837326 |
| 10 | 21030011031120 |
| 11 | 6778860a80893 |
| 12 | 2437910188780 |
| 13 | b97177007650 |
| 14 | 529c02381280 |
| 15 | 26708b1a48d0 |
| hex | 13206e564e50 |
21030011031120 has 1280 divisors, whose sum is σ = 83618328084480. Its totient is φ = 4254430003200.
The previous prime is 21030011031119. The next prime is 21030011031149. The reversal of 21030011031120 is 2113011003012.
It is a happy number.
It is a super-2 number, since 2×210300110311202 (a number of 27 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a self number, because there is not a number n which added to its sum of digits gives 21030011031120.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 19170474412 + ... + 19170475508.
It is an arithmetic number, because the mean of its divisors is an integer number (65326818816).
Almost surely, 221030011031120 is an apocalyptic number.
21030011031120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21030011031120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41809164042240).
21030011031120 is an abundant number, since it is smaller than the sum of its proper divisors (62588317053360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21030011031120 is a wasteful number, since it uses less digits than its factorization.
21030011031120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1524 (or 1518 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 15.
Adding to 21030011031120 its reverse (2113011003012), we get a palindrome (23143022034132).
The spelling of 21030011031120 in words is "twenty-one trillion, thirty billion, eleven million, thirty-one thousand, one hundred twenty".
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