122251399 has 2 divisors, whose sum is σ = 122251400. Its totient is φ = 122251398.

The previous prime is 122251387. The next prime is 122251429. The reversal of 122251399 is 993152221.

It is a weak prime.

It is an emirp because it is prime and its reverse (993152221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122251399 - 2⁷ = 122251271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122251099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61125699 + 61125700.

It is an arithmetic number, because the mean of its divisors is an integer number (61125700).

Almost surely, 2^122251399 is an apocalyptic number.

122251399 is a deficient number, since it is larger than the sum of its proper divisors (1).

122251399 is an equidigital number, since it uses as much as digits as its factorization.

122251399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 34.

The square root of 122251399 is about 11056.7354585339. The cubic root of 122251399 is about 496.3080040992.

The spelling of 122251399 in words is "one hundred twenty-two million, two hundred fifty-one thousand, three hundred ninety-nine".