122129 has 8 divisors (see below), whose sum is σ = 142080. Its totient is φ = 102816.

The previous prime is 122117. The next prime is 122131. The reversal of 122129 is 921221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122129 - 2¹² = 118033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392 + ... + 630.

It is an arithmetic number, because the mean of its divisors is an integer number (17760).

2¹²²¹²⁹ is an apocalyptic number.

It is an amenable number.

122129 is a deficient number, since it is larger than the sum of its proper divisors (19951).

122129 is an equidigital number, since it uses as much as digits as its factorization.

122129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 72, while the sum is 17.

The square root of 122129 is about 349.4695981055. The cubic root of 122129 is about 49.6142313048.

It can be divided in two parts, 12212 and 9, that added together give a palindrome (12221).

The spelling of 122129 in words is "one hundred twenty-two thousand, one hundred twenty-nine".