117612021 has 8 divisors (see below), whose sum is σ = 156898144. Its totient is φ = 78366960.

The previous prime is 117612013. The next prime is 117612037. The reversal of 117612021 is 120216711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117612021 - 2³ = 117612013 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 (117612091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2806 + ... + 15591.

It is an arithmetic number, because the mean of its divisors is an integer number (19612268).

Almost surely, 2^117612021 is an apocalyptic number.

It is an amenable number.

117612021 is a deficient number, since it is larger than the sum of its proper divisors (39286123).

117612021 is a wasteful number, since it uses less digits than its factorization.

117612021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20531.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 117612021 is about 10844.9076067987. The cubic root of 117612021 is about 489.9486562890.

Adding to 117612021 its reverse (120216711), we get a palindrome (237828732).

The spelling of 117612021 in words is "one hundred seventeen million, six hundred twelve thousand, twenty-one".