23221021302 has 32 divisors (see below), whose sum is σ = 52113195360. Its totient is φ = 7663701600.

The previous prime is 23221021297. The next prime is 23221021309. The reversal of 23221021302 is 20312012232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221021309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2123353 + ... + 2134260.

It is an arithmetic number, because the mean of its divisors is an integer number (1628537355).

Almost surely, 2^23221021302 is an apocalyptic number.

23221021302 is an abundant number, since it is smaller than the sum of its proper divisors (28892174058).

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

23221021302 is a wasteful number, since it uses less digits than its factorization.

23221021302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257725 (or 4257719 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23221021302 its reverse (20312012232), we get a palindrome (43533033534).

The spelling of 23221021302 in words is "twenty-three billion, two hundred twenty-one million, twenty-one thousand, three hundred two".