122280129 has 6 divisors (see below), whose sum is σ = 176626866. Its totient is φ = 81520080.

The previous prime is 122280077. The next prime is 122280139. The reversal of 122280129 is 921082221.

It can be written as a sum of positive squares in only one way, i.e., 117679104 + 4601025 = 10848^2 + 2145^2 .

It is not a de Polignac number, because 122280129 - 2⁹ = 122279617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122280139) 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 5 ways as a sum of consecutive naturals, for example, 6793332 + ... + 6793349.

It is an arithmetic number, because the mean of its divisors is an integer number (29437811).

Almost surely, 2^122280129 is an apocalyptic number.

It is an amenable number.

122280129 is a deficient number, since it is larger than the sum of its proper divisors (54346737).

122280129 is a wasteful number, since it uses less digits than its factorization.

122280129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13586687 (or 13586684 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 122280129 is about 11058.0345902877. The cubic root of 122280129 is about 496.3468797610.

The spelling of 122280129 in words is "one hundred twenty-two million, two hundred eighty thousand, one hundred twenty-nine".