| Base | Representation |
|---|---|
| bin | 1001000110101100011010… |
| … | …00111110110011101101000 |
| 3 | 2121220000020120012220221120 |
| 4 | 10203112031013312131220 |
| 5 | 10111011414303242300 |
| 6 | 110325341134335240 |
| 7 | 4134325152606141 |
| oct | 443261507663550 |
| 9 | 77800216186846 |
| 10 | 20021210212200 |
| 11 | 6419a4723842a |
| 12 | 22b42b295a520 |
| 13 | b22cb861a162 |
| 14 | 4d3063170ac8 |
| 15 | 24abe6ea83a0 |
| hex | 12358d1f6768 |
20021210212200 has 192 divisors, whose sum is σ = 62227074087360. Its totient is φ = 5325129707520.
The previous prime is 20021210212153. The next prime is 20021210212313. The reversal of 20021210212200 is 221201212002.
It is a super-2 number, since 2×200212102122002 (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 20021210212200.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376900042 + ... + 376953158.
It is an arithmetic number, because the mean of its divisors is an integer number (324099344205).
Almost surely, 220021210212200 is an apocalyptic number.
20021210212200 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 20021210212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31113537043680).
20021210212200 is an abundant number, since it is smaller than the sum of its proper divisors (42205863875160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20021210212200 is a wasteful number, since it uses less digits than its factorization.
20021210212200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 54756 (or 54747 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 15.
Adding to 20021210212200 its reverse (221201212002), we get a palindrome (20242411424202).
The spelling of 20021210212200 in words is "twenty trillion, twenty-one billion, two hundred ten million, two hundred twelve thousand, two hundred".
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