21023202322 has 12 divisors (see below), whose sum is σ = 31646868750. Its totient is φ = 10474377888.

The previous prime is 21023202307. The next prime is 21023202323. The reversal of 21023202322 is 22320232012.

It can be written as a sum of positive squares in only one way, i.e., 18222570081 + 2800632241 = 134991^2 + 52921^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21023202322.

It is not an unprimeable number, because it can be changed into a prime (21023202323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94554 + ... + 225802.

Almost surely, 2^21023202322 is an apocalyptic number.

21023202322 is a deficient number, since it is larger than the sum of its proper divisors (10623666428).

21023202322 is an equidigital number, since it uses as much as digits as its factorization.

21023202322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131817 (or 131534 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21023202322 its reverse (22320232012), we get a palindrome (43343434334).

The spelling of 21023202322 in words is "twenty-one billion, twenty-three million, two hundred two thousand, three hundred twenty-two".