23112021120 has 128 divisors (see below), whose sum is σ = 73728325440. Its totient is φ = 6158290944.

The previous prime is 23112021073. The next prime is 23112021131. The reversal of 23112021120 is 2112021132.

It is a tau number, because it is divible by the number of its divisors (128).

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 23112021120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2843302 + ... + 2851418.

Almost surely, 2^23112021120 is an apocalyptic number.

23112021120 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 23112021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36864162720).

23112021120 is an abundant number, since it is smaller than the sum of its proper divisors (50616304320).

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

23112021120 is a wasteful number, since it uses less digits than its factorization.

23112021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9622 (or 9610 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 23112021120 its reverse (2112021132), we get a palindrome (25224042252).

The spelling of 23112021120 in words is "twenty-three billion, one hundred twelve million, twenty-one thousand, one hundred twenty".