2021111002139 has 2 divisors, whose sum is σ = 2021111002140. Its totient is φ = 2021111002138.

The previous prime is 2021111002033. The next prime is 2021111002199. The reversal of 2021111002139 is 9312001111202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021111002139 - 2²⁴ = 2021094224923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021111002199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010555501069 + 1010555501070.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555501070).

Almost surely, 2^{2021111002139} is an apocalyptic number.

2021111002139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021111002139 is an equidigital number, since it uses as much as digits as its factorization.

2021111002139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 2021111002139 in words is "two trillion, twenty-one billion, one hundred eleven million, two thousand, one hundred thirty-nine".