23021331020 has 12 divisors (see below), whose sum is σ = 48344795184. Its totient is φ = 9208532400.

The previous prime is 23021331001. The next prime is 23021331041. The reversal of 23021331020 is 2013312032.

It is a self number, because there is not a number n which added to its sum of digits gives 23021331020.

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, 575533256 + ... + 575533295.

It is an arithmetic number, because the mean of its divisors is an integer number (4028732932).

Almost surely, 2^23021331020 is an apocalyptic number.

23021331020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021331020 is an abundant number, since it is smaller than the sum of its proper divisors (25323464164).

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

23021331020 is a wasteful number, since it uses less digits than its factorization.

23021331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151066560 (or 1151066558 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23021331020 its reverse (2013312032), we get a palindrome (25034643052).

The spelling of 23021331020 in words is "twenty-three billion, twenty-one million, three hundred thirty-one thousand, twenty".