122544899 has 4 divisors (see below), whose sum is σ = 122567040. Its totient is φ = 122522760.

The previous prime is 122544871. The next prime is 122544911. The reversal of 122544899 is 998445221.

It is a Cunningham number, because it is equal to 11070²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 998445221 = 1289 ⋅774589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122544899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122544199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5534 + ... + 16604.

It is an arithmetic number, because the mean of its divisors is an integer number (30641760).

Almost surely, 2^122544899 is an apocalyptic number.

122544899 is a deficient number, since it is larger than the sum of its proper divisors (22141).

122544899 is a wasteful number, since it uses less digits than its factorization.

122544899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22140.

The product of its digits is 207360, while the sum is 44.

The square root of 122544899 is about 11069.9999548329. Note that the first 4 decimals coincide. The cubic root of 122544899 is about 496.7048638601.

The spelling of 122544899 in words is "one hundred twenty-two million, five hundred forty-four thousand, eight hundred ninety-nine".