12100212139 has 2 divisors, whose sum is σ = 12100212140. Its totient is φ = 12100212138.

The previous prime is 12100212101. The next prime is 12100212161. The reversal of 12100212139 is 93121200121.

It is an a-pointer prime, because the next prime (12100212161) can be obtained adding 12100212139 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12100212139 - 2²³ = 12091823531 is a prime.

It is not a weakly prime, because it can be changed into another prime (12100212199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050106069 + 6050106070.

It is an arithmetic number, because the mean of its divisors is an integer number (6050106070).

Almost surely, 2^12100212139 is an apocalyptic number.

12100212139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100212139 is an equidigital number, since it uses as much as digits as its factorization.

12100212139 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 12100212139 in words is "twelve billion, one hundred million, two hundred twelve thousand, one hundred thirty-nine".