23021203220 has 12 divisors (see below), whose sum is σ = 48344526804. Its totient is φ = 9208481280.

The previous prime is 23021203199. The next prime is 23021203223. The reversal of 23021203220 is 2230212032.

It can be written as a sum of positive squares in 2 ways, for example, as 4002586756 + 19018616464 = 63266^2 + 137908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021203223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575530061 + ... + 575530100.

It is an arithmetic number, because the mean of its divisors is an integer number (4028710567).

Almost surely, 2^23021203220 is an apocalyptic number.

23021203220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021203220 is an abundant number, since it is smaller than the sum of its proper divisors (25323323584).

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

23021203220 is a wasteful number, since it uses less digits than its factorization.

23021203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151060170 (or 1151060168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23021203220 its reverse (2230212032), we get a palindrome (25251415252).

The spelling of 23021203220 in words is "twenty-three billion, twenty-one million, two hundred three thousand, two hundred twenty".