121793129923 has 2 divisors, whose sum is σ = 121793129924. Its totient is φ = 121793129922.

The previous prime is 121793129897. The next prime is 121793129959. The reversal of 121793129923 is 329921397121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121793129923 - 2²¹ = 121791032771 is a prime.

It is not a weakly prime, because it can be changed into another prime (121793129023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60896564961 + 60896564962.

It is an arithmetic number, because the mean of its divisors is an integer number (60896564962).

Almost surely, 2^121793129923 is an apocalyptic number.

121793129923 is a deficient number, since it is larger than the sum of its proper divisors (1).

121793129923 is an equidigital number, since it uses as much as digits as its factorization.

121793129923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 49.

The spelling of 121793129923 in words is "one hundred twenty-one billion, seven hundred ninety-three million, one hundred twenty-nine thousand, nine hundred twenty-three".