102112213139 has 2 divisors, whose sum is σ = 102112213140. Its totient is φ = 102112213138.

The previous prime is 102112213121. The next prime is 102112213223. The reversal of 102112213139 is 931312211201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102112213139 is a prime.

It is not a weakly prime, because it can be changed into another prime (102112213939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51056106569 + 51056106570.

It is an arithmetic number, because the mean of its divisors is an integer number (51056106570).

Almost surely, 2^102112213139 is an apocalyptic number.

102112213139 is a deficient number, since it is larger than the sum of its proper divisors (1).

102112213139 is an equidigital number, since it uses as much as digits as its factorization.

102112213139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 102112213139 in words is "one hundred two billion, one hundred twelve million, two hundred thirteen thousand, one hundred thirty-nine".