23100121020 has 48 divisors (see below), whose sum is σ = 65900731680. Its totient is φ = 6043804416.

The previous prime is 23100120977. The next prime is 23100121021. The reversal of 23100121020 is 2012100132.

It is a super-2 number, since 2×23100121020² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23100120987 and 23100121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23100121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3628915 + ... + 3635274.

It is an arithmetic number, because the mean of its divisors is an integer number (1372931910).

Almost surely, 2^23100121020 is an apocalyptic number.

23100121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23100121020 is an abundant number, since it is smaller than the sum of its proper divisors (42800610660).

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

23100121020 is a wasteful number, since it uses less digits than its factorization.

23100121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7264254 (or 7264252 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 23100121020 its reverse (2012100132), we get a palindrome (25112221152).

The spelling of 23100121020 in words is "twenty-three billion, one hundred million, one hundred twenty-one thousand, twenty".