117272221 has 4 divisors (see below), whose sum is σ = 127933344. Its totient is φ = 106611100.

The previous prime is 117272213. The next prime is 117272227. The reversal of 117272221 is 122272711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117272221 - 2³ = 117272213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117272227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330545 + ... + 5330566.

It is an arithmetic number, because the mean of its divisors is an integer number (31983336).

Almost surely, 2^117272221 is an apocalyptic number.

117272221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117272221 is a deficient number, since it is larger than the sum of its proper divisors (10661123).

117272221 is a wasteful number, since it uses less digits than its factorization.

117272221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661122.

The product of its digits is 784, while the sum is 25.

The square root of 117272221 is about 10829.2299356879. The cubic root of 117272221 is about 489.4763543838.

The spelling of 117272221 in words is "one hundred seventeen million, two hundred seventy-two thousand, two hundred twenty-one".