23111002120 has 64 divisors (see below), whose sum is σ = 52191397440. Its totient is φ = 9210412800.

The previous prime is 23111002097. The next prime is 23111002141. The reversal of 23111002120 is 2120011132.

It is a self number, because there is not a number n which added to its sum of digits gives 23111002120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21182775 + ... + 21183865.

It is an arithmetic number, because the mean of its divisors is an integer number (815490585).

Almost surely, 2^23111002120 is an apocalyptic number.

23111002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111002120 is an abundant number, since it is smaller than the sum of its proper divisors (29080395320).

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

23111002120 is a wasteful number, since it uses less digits than its factorization.

23111002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566 (or 2562 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 23111002120 its reverse (2120011132), we get a palindrome (25231013252).

The spelling of 23111002120 in words is "twenty-three billion, one hundred eleven million, two thousand, one hundred twenty".