21213302132 has 24 divisors (see below), whose sum is σ = 42258912192. Its totient is φ = 9223174400.

The previous prime is 21213302129. The next prime is 21213302161. The reversal of 21213302132 is 23120331212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10479869 + ... + 10481892.

It is an arithmetic number, because the mean of its divisors is an integer number (1760788008).

Almost surely, 2^21213302132 is an apocalyptic number.

21213302132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21213302132 is a deficient number, since it is larger than the sum of its proper divisors (21045610060).

21213302132 is a wasteful number, since it uses less digits than its factorization.

21213302132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20961799 (or 20961797 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21213302132 its reverse (23120331212), we get a palindrome (44333633344).

The spelling of 21213302132 in words is "twenty-one billion, two hundred thirteen million, three hundred two thousand, one hundred thirty-two".