1231222322159 has 2 divisors, whose sum is σ = 1231222322160. Its totient is φ = 1231222322158.

The previous prime is 1231222322101. The next prime is 1231222322171. The reversal of 1231222322159 is 9512232221321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231222322159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231222322179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615611161079 + 615611161080.

It is an arithmetic number, because the mean of its divisors is an integer number (615611161080).

Almost surely, 2^{1231222322159} is an apocalyptic number.

1231222322159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231222322159 is an equidigital number, since it uses as much as digits as its factorization.

1231222322159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The spelling of 1231222322159 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, three hundred twenty-two thousand, one hundred fifty-nine".