117276221 has 4 divisors (see below), whose sum is σ = 119198844. Its totient is φ = 115353600.

The previous prime is 117276209. The next prime is 117276223. The reversal of 117276221 is 122672711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50608996 + 66667225 = 7114^2 + 8165^2 .

It is a cyclic number.

It is not a de Polignac number, because 117276221 - 2⁶ = 117276157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117276223) 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, 961220 + ... + 961341.

It is an arithmetic number, because the mean of its divisors is an integer number (29799711).

Almost surely, 2^117276221 is an apocalyptic number.

It is an amenable number.

117276221 is a deficient number, since it is larger than the sum of its proper divisors (1922623).

117276221 is an equidigital number, since it uses as much as digits as its factorization.

117276221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922622.

The product of its digits is 2352, while the sum is 29.

The square root of 117276221 is about 10829.4146194520. The cubic root of 117276221 is about 489.4819194504.

The spelling of 117276221 in words is "one hundred seventeen million, two hundred seventy-six thousand, two hundred twenty-one".