122999449799 has 4 divisors (see below), whose sum is σ = 123016148640. Its totient is φ = 122982750960.

The previous prime is 122999449789. The next prime is 122999449829. The reversal of 122999449799 is 997944999221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122999449799 - 2²⁰ = 122998401223 is a prime.

It is a super-2 number, since 2×122999449799² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122999449789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8338367 + ... + 8353104.

It is an arithmetic number, because the mean of its divisors is an integer number (30754037160).

Almost surely, 2^122999449799 is an apocalyptic number.

122999449799 is a deficient number, since it is larger than the sum of its proper divisors (16698841).

122999449799 is an equidigital number, since it uses as much as digits as its factorization.

122999449799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16698840.

The product of its digits is 238085568, while the sum is 74.

The spelling of 122999449799 in words is "one hundred twenty-two billion, nine hundred ninety-nine million, four hundred forty-nine thousand, seven hundred ninety-nine".