121440104055531 has 6 divisors (see below), whose sum is σ = 175413483635780. Its totient is φ = 80960069370348.

The previous prime is 121440104055401. The next prime is 121440104055533. The reversal of 121440104055531 is 135550401044121.

121440104055531 is a `hidden beast` number, since 1 + 2 + 14 + 4 + 0 + 104 + 0 + 5 + 5 + 531 = 666.

It is not a de Polignac number, because 121440104055531 - 2²⁷ = 121439969837803 is a prime.

It is a super-2 number, since 2×121440104055531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121440104055533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6746672447521 + ... + 6746672447538.

Almost surely, 2^{121440104055531} is an apocalyptic number.

121440104055531 is a deficient number, since it is larger than the sum of its proper divisors (53973379580249).

121440104055531 is a wasteful number, since it uses less digits than its factorization.

121440104055531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13493344895065 (or 13493344895062 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 121440104055531 its reverse (135550401044121), we get a palindrome (256990505099652).

The spelling of 121440104055531 in words is "one hundred twenty-one trillion, four hundred forty billion, one hundred four million, fifty-five thousand, five hundred thirty-one".