122198159 has 12 divisors (see below), whose sum is σ = 130214664. Its totient is φ = 114651264.

The previous prime is 122198129. The next prime is 122198203. The reversal of 122198159 is 951891221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-122198159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122198119) 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 11 ways as a sum of consecutive naturals, for example, 157697 + ... + 158469.

It is an arithmetic number, because the mean of its divisors is an integer number (10851222).

Almost surely, 2^122198159 is an apocalyptic number.

122198159 is a deficient number, since it is larger than the sum of its proper divisors (8016505).

122198159 is an equidigital number, since it uses as much as digits as its factorization.

122198159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1337 counting only the distinct ones).

The product of its digits is 12960, while the sum is 38.

The square root of 122198159 is about 11054.3276141066. The cubic root of 122198159 is about 496.2359469147.

The spelling of 122198159 in words is "one hundred twenty-two million, one hundred ninety-eight thousand, one hundred fifty-nine".