117221709 has 8 divisors (see below), whose sum is σ = 170504352. Its totient is φ = 71043440.

The previous prime is 117221707. The next prime is 117221729. The reversal of 117221709 is 907122711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117221709 - 2¹ = 117221707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117221707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1776054 + ... + 1776119.

It is an arithmetic number, because the mean of its divisors is an integer number (21313044).

Almost surely, 2^117221709 is an apocalyptic number.

It is an amenable number.

117221709 is a deficient number, since it is larger than the sum of its proper divisors (53282643).

117221709 is a wasteful number, since it uses less digits than its factorization.

117221709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552187.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 117221709 is about 10826.8974780405. The cubic root of 117221709 is about 489.4060678315.

It can be divided in two parts, 11722 and 1709, that added together give a palindrome (13431).

The spelling of 117221709 in words is "one hundred seventeen million, two hundred twenty-one thousand, seven hundred nine".