2121110081039 has 2 divisors, whose sum is σ = 2121110081040. Its totient is φ = 2121110081038.

The previous prime is 2121110081021. The next prime is 2121110081059. The reversal of 2121110081039 is 9301800111212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121110081039 - 2²⁰ = 2121109032463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121110081059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060555040519 + 1060555040520.

It is an arithmetic number, because the mean of its divisors is an integer number (1060555040520).

Almost surely, 2^{2121110081039} is an apocalyptic number.

2121110081039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121110081039 is an equidigital number, since it uses as much as digits as its factorization.

2121110081039 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 29.

The spelling of 2121110081039 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, eighty-one thousand, thirty-nine".