12231220139 has 2 divisors, whose sum is σ = 12231220140. Its totient is φ = 12231220138.

The previous prime is 12231220103. The next prime is 12231220147. The reversal of 12231220139 is 93102213221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231220139 is a prime.

It is not a weakly prime, because it can be changed into another prime (12231420139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115610069 + 6115610070.

It is an arithmetic number, because the mean of its divisors is an integer number (6115610070).

Almost surely, 2^12231220139 is an apocalyptic number.

12231220139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231220139 is an equidigital number, since it uses as much as digits as its factorization.

12231220139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 12231220139 in words is "twelve billion, two hundred thirty-one million, two hundred twenty thousand, one hundred thirty-nine".