123012204432779 has 2 divisors, whose sum is σ = 123012204432780. Its totient is φ = 123012204432778.

The previous prime is 123012204432749. The next prime is 123012204432791. The reversal of 123012204432779 is 977234402210321.

It is a strong prime.

It is an emirp because it is prime and its reverse (977234402210321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123012204432779 is a prime.

It is not a weakly prime, because it can be changed into another prime (123012204432749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506102216389 + 61506102216390.

It is an arithmetic number, because the mean of its divisors is an integer number (61506102216390).

Almost surely, 2^{123012204432779} is an apocalyptic number.

123012204432779 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012204432779 is an equidigital number, since it uses as much as digits as its factorization.

123012204432779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 123012204432779 in words is "one hundred twenty-three trillion, twelve billion, two hundred four million, four hundred thirty-two thousand, seven hundred seventy-nine".