117212056 has 16 divisors (see below), whose sum is σ = 236678400. Its totient is φ = 54097824.

The previous prime is 117212027. The next prime is 117212077. The reversal of 117212056 is 650212711.

It is a self number, because there is not a number n which added to its sum of digits gives 117212056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563416 + ... + 563623.

It is an arithmetic number, because the mean of its divisors is an integer number (14792400).

Almost surely, 2^117212056 is an apocalyptic number.

It is an amenable number.

117212056 is an abundant number, since it is smaller than the sum of its proper divisors (119466344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117212056 is a wasteful number, since it uses less digits than its factorization.

117212056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127058 (or 1127054 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 117212056 is about 10826.4516809525. The cubic root of 117212056 is about 489.3926335553.

Adding to 117212056 its reverse (650212711), we get a palindrome (767424767).

The spelling of 117212056 in words is "one hundred seventeen million, two hundred twelve thousand, fifty-six".