122456899 has 16 divisors (see below), whose sum is σ = 136608768. Its totient is φ = 109174912.

The previous prime is 122456897. The next prime is 122456903. The reversal of 122456899 is 998654221.

It is a cyclic number.

It is not a de Polignac number, because 122456899 - 2¹ = 122456897 is a prime.

It is a super-2 number, since 2×122456899² = 29991384225392402, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122456891) 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 in 15 ways as a sum of consecutive naturals, for example, 40374 + ... + 43300.

It is an arithmetic number, because the mean of its divisors is an integer number (8538048).

Almost surely, 2^122456899 is an apocalyptic number.

122456899 is a deficient number, since it is larger than the sum of its proper divisors (14151869).

122456899 is a wasteful number, since it uses less digits than its factorization.

122456899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074.

The product of its digits is 311040, while the sum is 46.

The square root of 122456899 is about 11066.0245345833. The cubic root of 122456899 is about 496.5859401150.

The spelling of 122456899 in words is "one hundred twenty-two million, four hundred fifty-six thousand, eight hundred ninety-nine".