117021055621 has 16 divisors (see below), whose sum is σ = 122199453040. Its totient is φ = 111950138880.

The previous prime is 117021055601. The next prime is 117021055637. The reversal of 117021055621 is 126550120711.

It can be written as a sum of positive squares in 8 ways, for example, as 4548018721 + 112473036900 = 67439^2 + 335370^2 .

It is a cyclic number.

It is not a de Polignac number, because 117021055621 - 2⁷ = 117021055493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117021055601) 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, 7279825 + ... + 7295881.

It is an arithmetic number, because the mean of its divisors is an integer number (7637465815).

Almost surely, 2^117021055621 is an apocalyptic number.

It is an amenable number.

117021055621 is a deficient number, since it is larger than the sum of its proper divisors (5178397419).

117021055621 is a wasteful number, since it uses less digits than its factorization.

117021055621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19384.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 117021055621 in words is "one hundred seventeen billion, twenty-one million, fifty-five thousand, six hundred twenty-one".