122491599 has 12 divisors (see below), whose sum is σ = 166058568. Its totient is φ = 80315040.

The previous prime is 122491529. The next prime is 122491601. The reversal of 122491599 is 995194221.

It is not a de Polignac number, because 122491599 - 2⁷ = 122491471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122491599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122491519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5677 + ... + 16649.

It is an arithmetic number, because the mean of its divisors is an integer number (13838214).

Almost surely, 2^122491599 is an apocalyptic number.

122491599 is a deficient number, since it is larger than the sum of its proper divisors (43566969).

122491599 is an equidigital number, since it uses as much as digits as its factorization.

122491599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11098 (or 11037 counting only the distinct ones).

The product of its digits is 58320, while the sum is 42.

The square root of 122491599 is about 11067.5922855877. The cubic root of 122491599 is about 496.6328407114.

The spelling of 122491599 in words is "one hundred twenty-two million, four hundred ninety-one thousand, five hundred ninety-nine".