21312113210332 has 48 divisors (see below), whose sum is σ = 42684827189760. Its totient is φ = 9120781944000.

The previous prime is 21312113210329. The next prime is 21312113210351. The reversal of 21312113210332 is 23301231121312.

It is a junction number, because it is equal to n+sod(n) for n = 21312113210297 and 21312113210306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104460982 + ... + 104664802.

It is an arithmetic number, because the mean of its divisors is an integer number (889267233120).

Almost surely, 2^{21312113210332} is an apocalyptic number.

It is an amenable number.

21312113210332 is an abundant number, since it is smaller than the sum of its proper divisors (21372713979428).

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

21312113210332 is a wasteful number, since it uses less digits than its factorization.

21312113210332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209122 (or 209120 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21312113210332 its reverse (23301231121312), we get a palindrome (44613344331644).

The spelling of 21312113210332 in words is "twenty-one trillion, three hundred twelve billion, one hundred thirteen million, two hundred ten thousand, three hundred thirty-two".