100120021139 has 2 divisors, whose sum is σ = 100120021140. Its totient is φ = 100120021138.

The previous prime is 100120021097. The next prime is 100120021151. The reversal of 100120021139 is 931120021001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100120021139 - 2²⁰ = 100118972563 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100120021139.

It is not a weakly prime, because it can be changed into another prime (100120521139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060010569 + 50060010570.

It is an arithmetic number, because the mean of its divisors is an integer number (50060010570).

Almost surely, 2^100120021139 is an apocalyptic number.

100120021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120021139 is an equidigital number, since it uses as much as digits as its factorization.

100120021139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 100120021139 in words is "one hundred billion, one hundred twenty million, twenty-one thousand, one hundred thirty-nine".