1010021020139 has 2 divisors, whose sum is σ = 1010021020140. Its totient is φ = 1010021020138.

The previous prime is 1010021020117. The next prime is 1010021020157. The reversal of 1010021020139 is 9310201200101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1010021020139 - 2³² = 1005726052843 is a prime.

It is a super-2 number, since 2×1010021020139² (a number of 25 digits) contains 22 as substring.

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 1010021020139.

It is not a weakly prime, because it can be changed into another prime (1010021020439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505010510069 + 505010510070.

It is an arithmetic number, because the mean of its divisors is an integer number (505010510070).

Almost surely, 2^{1010021020139} is an apocalyptic number.

1010021020139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010021020139 is an equidigital number, since it uses as much as digits as its factorization.

1010021020139 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 1010021020139 in words is "one trillion, ten billion, twenty-one million, twenty thousand, one hundred thirty-nine".