23110121000 has 64 divisors (see below), whose sum is σ = 54818646480. Its totient is φ = 9117388800.

The previous prime is 23110120961. The next prime is 23110121003. The reversal of 23110121000 is 12101132.

It can be written as a sum of positive squares in 8 ways, for example, as 5166446884 + 17943674116 = 71878^2 + 133954^2 .

It is not an unprimeable number, because it can be changed into a prime (23110121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85289 + ... + 231288.

Almost surely, 2^23110121000 is an apocalyptic number.

23110121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23110121000 is an abundant number, since it is smaller than the sum of its proper divisors (31708525480).

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

23110121000 is a wasteful number, since it uses less digits than its factorization.

23110121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316671 (or 316657 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 23110121000 its reverse (12101132), we get a palindrome (23122222132).

The spelling of 23110121000 in words is "twenty-three billion, one hundred ten million, one hundred twenty-one thousand".