117219911 has 4 divisors (see below), whose sum is σ = 123389400. Its totient is φ = 111050424.

The previous prime is 117219887. The next prime is 117219923. The reversal of 117219911 is 119912711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117219911 - 2⁶ = 117219847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117219931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3084716 + ... + 3084753.

It is an arithmetic number, because the mean of its divisors is an integer number (30847350).

Almost surely, 2^117219911 is an apocalyptic number.

117219911 is a deficient number, since it is larger than the sum of its proper divisors (6169489).

117219911 is an equidigital number, since it uses as much as digits as its factorization.

117219911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169488.

The product of its digits is 1134, while the sum is 32.

The square root of 117219911 is about 10826.8144437780. The cubic root of 117219911 is about 489.4035655743.

The spelling of 117219911 in words is "one hundred seventeen million, two hundred nineteen thousand, nine hundred eleven".