1020000202139 has 2 divisors, whose sum is σ = 1020000202140. Its totient is φ = 1020000202138.

The previous prime is 1020000202061. The next prime is 1020000202153. The reversal of 1020000202139 is 9312020000201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020000202139 - 2²⁴ = 1019983424923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020000202139.

It is not a weakly prime, because it can be changed into another prime (1020000201139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510000101069 + 510000101070.

It is an arithmetic number, because the mean of its divisors is an integer number (510000101070).

Almost surely, 2^{1020000202139} is an apocalyptic number.

1020000202139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020000202139 is an equidigital number, since it uses as much as digits as its factorization.

1020000202139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 1020000202139 in words is "one trillion, twenty billion, two hundred two thousand, one hundred thirty-nine".