122099965 has 12 divisors (see below), whose sum is σ = 158658804. Its totient is φ = 90165504.

The previous prime is 122099953. The next prime is 122099977. The reversal of 122099965 is 569990221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122099953) and next prime (122099977).

It can be written as a sum of positive squares in 6 ways, for example, as 63776196 + 58323769 = 7986^2 + 7637^2 .

It is not a de Polignac number, because 122099965 - 2⁷ = 122099837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71404 + ... + 73093.

It is an arithmetic number, because the mean of its divisors is an integer number (13221567).

Almost surely, 2^122099965 is an apocalyptic number.

It is an amenable number.

122099965 is a deficient number, since it is larger than the sum of its proper divisors (36558839).

122099965 is a wasteful number, since it uses less digits than its factorization.

122099965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144528 (or 144515 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 122099965 is about 11049.8852935223. The cubic root of 122099965 is about 496.1029922378.

The spelling of 122099965 in words is "one hundred twenty-two million, ninety-nine thousand, nine hundred sixty-five".