117772111 has 2 divisors, whose sum is σ = 117772112. Its totient is φ = 117772110.

The previous prime is 117772097. The next prime is 117772129. The reversal of 117772111 is 111277711.

It is a weak prime.

It is an emirp because it is prime and its reverse (111277711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117772111 - 2⁵ = 117772079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117772111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117772411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58886055 + 58886056.

It is an arithmetic number, because the mean of its divisors is an integer number (58886056).

Almost surely, 2^117772111 is an apocalyptic number.

117772111 is a deficient number, since it is larger than the sum of its proper divisors (1).

117772111 is an equidigital number, since it uses as much as digits as its factorization.

117772111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 686, while the sum is 28.

The square root of 117772111 is about 10852.2859803822. The cubic root of 117772111 is about 490.1708567024.

The spelling of 117772111 in words is "one hundred seventeen million, seven hundred seventy-two thousand, one hundred eleven".