124121131129 has 2 divisors, whose sum is σ = 124121131130. Its totient is φ = 124121131128.

The previous prime is 124121131081. The next prime is 124121131133. The reversal of 124121131129 is 921131121421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102734993529 + 21386137600 = 320523^2 + 146240^2 .

It is a cyclic number.

It is not a de Polignac number, because 124121131129 - 2³³ = 115531196537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124121131097 and 124121131106.

It is not a weakly prime, because it can be changed into another prime (124121131159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62060565564 + 62060565565.

It is an arithmetic number, because the mean of its divisors is an integer number (62060565565).

Almost surely, 2^124121131129 is an apocalyptic number.

It is an amenable number.

124121131129 is a deficient number, since it is larger than the sum of its proper divisors (1).

124121131129 is an equidigital number, since it uses as much as digits as its factorization.

124121131129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The spelling of 124121131129 in words is "one hundred twenty-four billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred twenty-nine".