23220120032100 has 54 divisors (see below), whose sum is σ = 72782176236770. Its totient is φ = 6192032008320.

The previous prime is 23220120032089. The next prime is 23220120032113. The reversal of 23220120032100 is 123002102232.

23220120032100 is a `hidden beast` number, since 2 + 3 + 220 + 120 + 0 + 321 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 405588112164 + 22814531919936 = 636858^2 + 4776456^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12900065785 + ... + 12900067584.

Almost surely, 2^{23220120032100} is an apocalyptic number.

23220120032100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23220120032100 is an abundant number, since it is smaller than the sum of its proper divisors (49562056204670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23220120032100 is a wasteful number, since it uses less digits than its factorization.

23220120032100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25800133389 (or 25800133379 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23220120032100 its reverse (123002102232), we get a palindrome (23343122134332).

The spelling of 23220120032100 in words is "twenty-three trillion, two hundred twenty billion, one hundred twenty million, thirty-two thousand, one hundred".