23001113121 has 24 divisors (see below), whose sum is σ = 36216441792. Its totient is φ = 12719498400.

The previous prime is 23001113111. The next prime is 23001113123. The reversal of 23001113121 is 12131110032.

It is a happy number.

It is not a de Polignac number, because 23001113121 - 2⁵ = 23001113089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23001113121.

It is not an unprimeable number, because it can be changed into a prime (23001113123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549690 + ... + 590051.

It is an arithmetic number, because the mean of its divisors is an integer number (1509018408).

Almost surely, 2^23001113121 is an apocalyptic number.

23001113121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23001113121 is a deficient number, since it is larger than the sum of its proper divisors (13215328671).

23001113121 is a wasteful number, since it uses less digits than its factorization.

23001113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139813 (or 1139782 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 23001113121 its reverse (12131110032), we get a palindrome (35132223153).

The spelling of 23001113121 in words is "twenty-three billion, one million, one hundred thirteen thousand, one hundred twenty-one".