122231332991 has 2 divisors, whose sum is σ = 122231332992. Its totient is φ = 122231332990.

The previous prime is 122231332903. The next prime is 122231333023. The reversal of 122231332991 is 199233132221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122231332991 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122231332291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61115666495 + 61115666496.

It is an arithmetic number, because the mean of its divisors is an integer number (61115666496).

Almost surely, 2^122231332991 is an apocalyptic number.

122231332991 is a deficient number, since it is larger than the sum of its proper divisors (1).

122231332991 is an equidigital number, since it uses as much as digits as its factorization.

122231332991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The spelling of 122231332991 in words is "one hundred twenty-two billion, two hundred thirty-one million, three hundred thirty-two thousand, nine hundred ninety-one".