23121030212220 has 96 divisors (see below), whose sum is σ = 67554793732608. Its totient is φ = 5897435560192.

The previous prime is 23121030212207. The next prime is 23121030212251. The reversal of 23121030212220 is 2221203012132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108633547 + ... + 108846173.

It is an arithmetic number, because the mean of its divisors is an integer number (703695768048).

Almost surely, 2^{23121030212220} is an apocalyptic number.

23121030212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121030212220 is an abundant number, since it is smaller than the sum of its proper divisors (44433763520388).

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

23121030212220 is a wasteful number, since it uses less digits than its factorization.

23121030212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291459 (or 291457 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 23121030212220 its reverse (2221203012132), we get a palindrome (25342233224352).

The spelling of 23121030212220 in words is "twenty-three trillion, one hundred twenty-one billion, thirty million, two hundred twelve thousand, two hundred twenty".