21303032244392 has 8 divisors (see below), whose sum is σ = 39943185458250. Its totient is φ = 10651516122192.

The previous prime is 21303032244269. The next prime is 21303032244401. The reversal of 21303032244392 is 29344223030312.

It can be written as a sum of positive squares in only one way, i.e., 19571192036356 + 1731840208036 = 4423934^2 + 1315994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331439515267 + ... + 1331439515282.

Almost surely, 2^{21303032244392} is an apocalyptic number.

It is an amenable number.

21303032244392 is a deficient number, since it is larger than the sum of its proper divisors (18640153213858).

21303032244392 is a wasteful number, since it uses less digits than its factorization.

21303032244392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662879030555 (or 2662879030551 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 21303032244392 in words is "twenty-one trillion, three hundred three billion, thirty-two million, two hundred forty-four thousand, three hundred ninety-two".