117307170021 has 64 divisors (see below), whose sum is σ = 164203776000. Its totient is φ = 74443380480.

The previous prime is 117307170011. The next prime is 117307170031. The reversal of 117307170021 is 120071703711.

It is an interprime number because it is at equal distance from previous prime (117307170011) and next prime (117307170031).

It is not a de Polignac number, because 117307170021 - 2⁷ = 117307169893 is a prime.

It is a super-2 number, since 2×117307170021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117307170011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 309517410 + ... + 309517788.

It is an arithmetic number, because the mean of its divisors is an integer number (2565684000).

Almost surely, 2^117307170021 is an apocalyptic number.

It is an amenable number.

117307170021 is a deficient number, since it is larger than the sum of its proper divisors (46896605979).

117307170021 is a wasteful number, since it uses less digits than its factorization.

117307170021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 2058, while the sum is 30.

Adding to 117307170021 its reverse (120071703711), we get a palindrome (237378873732).

The spelling of 117307170021 in words is "one hundred seventeen billion, three hundred seven million, one hundred seventy thousand, twenty-one".