124350421021 has 2 divisors, whose sum is σ = 124350421022. Its totient is φ = 124350421020.

The previous prime is 124350420959. The next prime is 124350421049. The reversal of 124350421021 is 120124053421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116861422500 + 7488998521 = 341850^2 + 86539^2 .

It is an emirp because it is prime and its reverse (120124053421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124350421021 - 2²⁹ = 123813550109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124350421121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62175210510 + 62175210511.

It is an arithmetic number, because the mean of its divisors is an integer number (62175210511).

Almost surely, 2^124350421021 is an apocalyptic number.

It is an amenable number.

124350421021 is a deficient number, since it is larger than the sum of its proper divisors (1).

124350421021 is an equidigital number, since it uses as much as digits as its factorization.

124350421021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 124350421021 its reverse (120124053421), we get a palindrome (244474474442).

The spelling of 124350421021 in words is "one hundred twenty-four billion, three hundred fifty million, four hundred twenty-one thousand, twenty-one".