123111329970869 has 2 divisors, whose sum is σ = 123111329970870. Its totient is φ = 123111329970868.

The previous prime is 123111329970821. The next prime is 123111329970917. The reversal of 123111329970869 is 968079923111321.

It is a balanced prime because it is at equal distance from previous prime (123111329970821) and next prime (123111329970917).

It can be written as a sum of positive squares in only one way, i.e., 111637460934769 + 11473869036100 = 10565863^2 + 3387310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123111329970869 is a prime.

It is a super-2 number, since 2×123111329970869² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123111329070869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555664985434 + 61555664985435.

It is an arithmetic number, because the mean of its divisors is an integer number (61555664985435).

Almost surely, 2^{123111329970869} is an apocalyptic number.

It is an amenable number.

123111329970869 is a deficient number, since it is larger than the sum of its proper divisors (1).

123111329970869 is an equidigital number, since it uses as much as digits as its factorization.

123111329970869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The spelling of 123111329970869 in words is "one hundred twenty-three trillion, one hundred eleven billion, three hundred twenty-nine million, nine hundred seventy thousand, eight hundred sixty-nine".