21322044965812 has 24 divisors (see below), whose sum is σ = 38022120928512. Its totient is φ = 10458629594400.

The previous prime is 21322044965783. The next prime is 21322044965833. The reversal of 21322044965812 is 21856944022312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4177264 + ... + 7752007.

It is an arithmetic number, because the mean of its divisors is an integer number (1584255038688).

Almost surely, 2^{21322044965812} is an apocalyptic number.

It is an amenable number.

21322044965812 is a deficient number, since it is larger than the sum of its proper divisors (16700075962700).

21322044965812 is a wasteful number, since it uses less digits than its factorization.

21322044965812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11937759 (or 11937757 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 21322044965812 in words is "twenty-one trillion, three hundred twenty-two billion, forty-four million, nine hundred sixty-five thousand, eight hundred twelve".