23011121020 has 12 divisors (see below), whose sum is σ = 48323354184. Its totient is φ = 9204448400.

The previous prime is 23011121017. The next prime is 23011121039. The reversal of 23011121020 is 2012111032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575278006 + ... + 575278045.

It is an arithmetic number, because the mean of its divisors is an integer number (4026946182).

Almost surely, 2^23011121020 is an apocalyptic number.

23011121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23011121020 is an abundant number, since it is smaller than the sum of its proper divisors (25312233164).

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

23011121020 is a wasteful number, since it uses less digits than its factorization.

23011121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150556060 (or 1150556058 counting only the distinct ones).

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

Adding to 23011121020 its reverse (2012111032), we get a palindrome (25023232052).

The spelling of 23011121020 in words is "twenty-three billion, eleven million, one hundred twenty-one thousand, twenty".