2021102220139 has 2 divisors, whose sum is σ = 2021102220140. Its totient is φ = 2021102220138.

The previous prime is 2021102220107. The next prime is 2021102220169. The reversal of 2021102220139 is 9310222011202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021102220139 - 2⁵ = 2021102220107 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021102220169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010551110069 + 1010551110070.

It is an arithmetic number, because the mean of its divisors is an integer number (1010551110070).

Almost surely, 2^{2021102220139} is an apocalyptic number.

2021102220139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021102220139 is an equidigital number, since it uses as much as digits as its factorization.

2021102220139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 2021102220139 in words is "two trillion, twenty-one billion, one hundred two million, two hundred twenty thousand, one hundred thirty-nine".