117587216121 has 16 divisors (see below), whose sum is σ = 160737816960. Its totient is φ = 76417162880.

The previous prime is 117587216119. The next prime is 117587216137. The reversal of 117587216121 is 121612785711.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 117587216121 - 2¹ = 117587216119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117587216221) 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, 237765 + ... + 540098.

It is an arithmetic number, because the mean of its divisors is an integer number (10046113560).

Almost surely, 2^117587216121 is an apocalyptic number.

It is an amenable number.

117587216121 is a deficient number, since it is larger than the sum of its proper divisors (43150600839).

117587216121 is a wasteful number, since it uses less digits than its factorization.

117587216121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779136.

The product of its digits is 47040, while the sum is 42.

The spelling of 117587216121 in words is "one hundred seventeen billion, five hundred eighty-seven million, two hundred sixteen thousand, one hundred twenty-one".