| Base | Representation |
|---|---|
| bin | 10001011110100010100… |
| … | …011001111000010111000 |
| 3 | 11020211001100200222022000 |
| 4 | 101132202203033002320 |
| 5 | 124134143343134430 |
| 6 | 2315424203301000 |
| 7 | 152525320145160 |
| oct | 21364243170270 |
| 9 | 4224040628260 |
| 10 | 1201023021240 |
| 11 | 423395204099 |
| 12 | 17492421a760 |
| 13 | 89343525513 |
| 14 | 421b63495a0 |
| 15 | 21394917e60 |
| hex | 117a28cf0b8 |
1201023021240 has 512 divisors, whose sum is σ = 4832739072000. Its totient is φ = 259174453248.
The previous prime is 1201023021239. The next prime is 1201023021257. The reversal of 1201023021240 is 421203201021.
It is a happy number.
1201023021240 is a `hidden beast` number, since 1 + 20 + 102 + 302 + 1 + 240 = 666.
It is a super-2 number, since 2×12010230212402 (a number of 25 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
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 127 ways as a sum of consecutive naturals, for example, 42072252 + ... + 42100788.
It is an arithmetic number, because the mean of its divisors is an integer number (9438943500).
Almost surely, 21201023021240 is an apocalyptic number.
1201023021240 is a gapful number since it is divisible by the number (10) 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 1201023021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2416369536000).
1201023021240 is an abundant number, since it is smaller than the sum of its proper divisors (3631716050760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1201023021240 is a wasteful number, since it uses less digits than its factorization.
1201023021240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28876 (or 28866 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
Adding to 1201023021240 its reverse (421203201021), we get a palindrome (1622226222261).
The spelling of 1201023021240 in words is "one trillion, two hundred one billion, twenty-three million, twenty-one thousand, two hundred forty".
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