21443455021113 has 16 divisors (see below), whose sum is σ = 32506874107840. Its totient is φ = 13963180012992.

The previous prime is 21443455021111. The next prime is 21443455021141. The reversal of 21443455021113 is 31112055434412.

21443455021113 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 34 + 5 + 502 + 1 + 113 = 666.

It is not a de Polignac number, because 21443455021113 - 2¹ = 21443455021111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21443455021111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9234906256 + ... + 9234908577.

It is an arithmetic number, because the mean of its divisors is an integer number (2031679631740).

Almost surely, 2^{21443455021113} is an apocalyptic number.

It is an amenable number.

21443455021113 is a deficient number, since it is larger than the sum of its proper divisors (11063419086727).

21443455021113 is a wasteful number, since it uses less digits than its factorization.

21443455021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18469814885 (or 18469814879 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 21443455021113 in words is "twenty-one trillion, four hundred forty-three billion, four hundred fifty-five million, twenty-one thousand, one hundred thirteen".