117267021 has 20 divisors (see below), whose sum is σ = 178909632. Its totient is φ = 76512168.

The previous prime is 117267019. The next prime is 117267049. The reversal of 117267021 is 120762711.

It is not a de Polignac number, because 117267021 - 2¹ = 117267019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117267001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11595 + ... + 19208.

Almost surely, 2^117267021 is an apocalyptic number.

It is an amenable number.

117267021 is a deficient number, since it is larger than the sum of its proper divisors (61642611).

117267021 is an equidigital number, since it uses as much as digits as its factorization.

117267021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30862 (or 30853 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 117267021 is about 10828.9898420859. The cubic root of 117267021 is about 489.4691196080.

The spelling of 117267021 in words is "one hundred seventeen million, two hundred sixty-seven thousand, twenty-one".