23111100120 has 96 divisors (see below), whose sum is σ = 72479055600. Its totient is φ = 5894989056.

The previous prime is 23111100119. The next prime is 23111100127. The reversal of 23111100120 is 2100111132.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23111100096 and 23111100105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118555 + ... + 245514.

Almost surely, 2^23111100120 is an apocalyptic number.

23111100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111100120 is an abundant number, since it is smaller than the sum of its proper divisors (49367955480).

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

23111100120 is a wasteful number, since it uses less digits than its factorization.

23111100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364129 (or 364102 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 23111100120 its reverse (2100111132), we get a palindrome (25211211252).

The spelling of 23111100120 in words is "twenty-three billion, one hundred eleven million, one hundred thousand, one hundred twenty".