12021102139 has 2 divisors, whose sum is σ = 12021102140. Its totient is φ = 12021102138.

The previous prime is 12021102109. The next prime is 12021102151. The reversal of 12021102139 is 93120112021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12021102139 - 2²⁵ = 11987547707 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021102109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010551069 + 6010551070.

It is an arithmetic number, because the mean of its divisors is an integer number (6010551070).

Almost surely, 2^12021102139 is an apocalyptic number.

12021102139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021102139 is an equidigital number, since it uses as much as digits as its factorization.

12021102139 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 22.

The spelling of 12021102139 in words is "twelve billion, twenty-one million, one hundred two thousand, one hundred thirty-nine".