121793129431 has 2 divisors, whose sum is σ = 121793129432. Its totient is φ = 121793129430.

The previous prime is 121793129387. The next prime is 121793129449. The reversal of 121793129431 is 134921397121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121793129431 - 2²⁵ = 121759574999 is a prime.

It is a super-2 number, since 2×121793129431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121793129231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60896564715 + 60896564716.

It is an arithmetic number, because the mean of its divisors is an integer number (60896564716).

Almost surely, 2^121793129431 is an apocalyptic number.

121793129431 is a deficient number, since it is larger than the sum of its proper divisors (1).

121793129431 is an equidigital number, since it uses as much as digits as its factorization.

121793129431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The spelling of 121793129431 in words is "one hundred twenty-one billion, seven hundred ninety-three million, one hundred twenty-nine thousand, four hundred thirty-one".