21332215204 has 12 divisors (see below), whose sum is σ = 38199548464. Its totient is φ = 10418058504.

The previous prime is 21332215189. The next prime is 21332215207. The reversal of 21332215204 is 40251223312.

It is not an unprimeable number, because it can be changed into a prime (21332215207) 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, 62012082 + ... + 62012425.

Almost surely, 2^21332215204 is an apocalyptic number.

It is an amenable number.

21332215204 is a deficient number, since it is larger than the sum of its proper divisors (16867333260).

21332215204 is a wasteful number, since it uses less digits than its factorization.

21332215204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124024554 (or 124024552 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 21332215204 its reverse (40251223312), we get a palindrome (61583438516).

The spelling of 21332215204 in words is "twenty-one billion, three hundred thirty-two million, two hundred fifteen thousand, two hundred four".