117221499737391 has 16 divisors (see below), whose sum is σ = 180391784606208. Its totient is φ = 66320509044000.

The previous prime is 117221499737389. The next prime is 117221499737399. The reversal of 117221499737391 is 193737994122711.

It is not a de Polignac number, because 117221499737391 - 2¹ = 117221499737389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117221499737399) 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, 27633543315 + ... + 27633547556.

It is an arithmetic number, because the mean of its divisors is an integer number (11274486537888).

Almost surely, 2^{117221499737391} is an apocalyptic number.

117221499737391 is a deficient number, since it is larger than the sum of its proper divisors (63170284868817).

117221499737391 is a wasteful number, since it uses less digits than its factorization.

117221499737391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55267090982.

The product of its digits is 36006768, while the sum is 66.

The spelling of 117221499737391 in words is "one hundred seventeen trillion, two hundred twenty-one billion, four hundred ninety-nine million, seven hundred thirty-seven thousand, three hundred ninety-one".