21010122211139 has 2 divisors, whose sum is σ = 21010122211140. Its totient is φ = 21010122211138.

The previous prime is 21010122211073. The next prime is 21010122211181. The reversal of 21010122211139 is 93111222101012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010122211139 - 2¹² = 21010122207043 is a prime.

It is not a weakly prime, because it can be changed into another prime (21010122213139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505061105569 + 10505061105570.

It is an arithmetic number, because the mean of its divisors is an integer number (10505061105570).

Almost surely, 2^{21010122211139} is an apocalyptic number.

21010122211139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010122211139 is an equidigital number, since it uses as much as digits as its factorization.

21010122211139 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 26.

The spelling of 21010122211139 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, two hundred eleven thousand, one hundred thirty-nine".