122153899391 has 2 divisors, whose sum is σ = 122153899392. Its totient is φ = 122153899390.

The previous prime is 122153899349. The next prime is 122153899409. The reversal of 122153899391 is 193998351221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122153899391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122153899321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61076949695 + 61076949696.

It is an arithmetic number, because the mean of its divisors is an integer number (61076949696).

Almost surely, 2^122153899391 is an apocalyptic number.

122153899391 is a deficient number, since it is larger than the sum of its proper divisors (1).

122153899391 is an equidigital number, since it uses as much as digits as its factorization.

122153899391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 53.

The spelling of 122153899391 in words is "one hundred twenty-two billion, one hundred fifty-three million, eight hundred ninety-nine thousand, three hundred ninety-one".