201001020202139 has 2 divisors, whose sum is σ = 201001020202140. Its totient is φ = 201001020202138.

The previous prime is 201001020202079. The next prime is 201001020202153. The reversal of 201001020202139 is 931202020100102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201001020202139 is a prime.

It is not a weakly prime, because it can be changed into another prime (201001020202189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500510101069 + 100500510101070.

It is an arithmetic number, because the mean of its divisors is an integer number (100500510101070).

Almost surely, 2^{201001020202139} is an apocalyptic number.

201001020202139 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001020202139 is an equidigital number, since it uses as much as digits as its factorization.

201001020202139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 201001020202139 in words is "two hundred one trillion, one billion, twenty million, two hundred two thousand, one hundred thirty-nine".