117626221 has 4 divisors (see below), whose sum is σ = 117726012. Its totient is φ = 117526432.

The previous prime is 117626167. The next prime is 117626237. The reversal of 117626221 is 122626711.

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 100701225 + 16924996 = 10035^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 117626221 - 2¹⁷ = 117495149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117626221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117626251) 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, 48106 + ... + 50491.

It is an arithmetic number, because the mean of its divisors is an integer number (29431503).

Almost surely, 2^117626221 is an apocalyptic number.

It is an amenable number.

117626221 is a deficient number, since it is larger than the sum of its proper divisors (99791).

117626221 is an equidigital number, since it uses as much as digits as its factorization.

117626221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99790.

The product of its digits is 2016, while the sum is 28.

The square root of 117626221 is about 10845.5622721923. The cubic root of 117626221 is about 489.9683736356.

The spelling of 117626221 in words is "one hundred seventeen million, six hundred twenty-six thousand, two hundred twenty-one".