23221012020 has 48 divisors (see below), whose sum is σ = 65110657920. Its totient is φ = 6183524736.

The previous prime is 23221011967. The next prime is 23221012033. The reversal of 23221012020 is 2021012232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230392 + ... + 315471.

It is an arithmetic number, because the mean of its divisors is an integer number (1356472040).

Almost surely, 2^23221012020 is an apocalyptic number.

23221012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23221012020 is an abundant number, since it is smaller than the sum of its proper divisors (41889645900).

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

23221012020 is a wasteful number, since it uses less digits than its factorization.

23221012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546584 (or 546582 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23221012020 its reverse (2021012232), we get a palindrome (25242024252).

The spelling of 23221012020 in words is "twenty-three billion, two hundred twenty-one million, twelve thousand, twenty".