117221577 has 16 divisors (see below), whose sum is σ = 170696640. Its totient is φ = 70963200.

The previous prime is 117221557. The next prime is 117221581. The reversal of 117221577 is 775122711.

It is not a de Polignac number, because 117221577 - 2⁷ = 117221449 is a prime.

It is a super-2 number, since 2×117221577² = 27481796228733858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (117221527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42249 + ... + 44937.

It is an arithmetic number, because the mean of its divisors is an integer number (10668540).

Almost surely, 2^117221577 is an apocalyptic number.

It is an amenable number.

117221577 is a deficient number, since it is larger than the sum of its proper divisors (53475063).

117221577 is a wasteful number, since it uses less digits than its factorization.

117221577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024.

The product of its digits is 6860, while the sum is 33.

The square root of 117221577 is about 10826.8913821096. The cubic root of 117221577 is about 489.4058841294.

The spelling of 117221577 in words is "one hundred seventeen million, two hundred twenty-one thousand, five hundred seventy-seven".