121347531117 has 24 divisors (see below), whose sum is σ = 177235874816. Its totient is φ = 79999690176.

The previous prime is 121347531091. The next prime is 121347531133. The reversal of 121347531117 is 711135743121.

121347531117 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 4 + 7 + 531 + 117 = 666.

It is not a de Polignac number, because 121347531117 - 2⁷ = 121347530989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121347531167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177993 + ... + 523809.

Almost surely, 2^121347531117 is an apocalyptic number.

It is an amenable number.

121347531117 is a deficient number, since it is larger than the sum of its proper divisors (55888343699).

121347531117 is a wasteful number, since it uses less digits than its factorization.

121347531117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346257 (or 346254 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The spelling of 121347531117 in words is "one hundred twenty-one billion, three hundred forty-seven million, five hundred thirty-one thousand, one hundred seventeen".