122102111121 has 32 divisors (see below), whose sum is σ = 165204547200. Its totient is φ = 80211755520.

The previous prime is 122102111039. The next prime is 122102111161. The reversal of 122102111121 is 121111201221.

It is a happy number.

It is not a de Polignac number, because 122102111121 - 2¹⁸ = 122101848977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122102111121.

It is not an unprimeable number, because it can be changed into a prime (122102111161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34480611 + ... + 34484151.

It is an arithmetic number, because the mean of its divisors is an integer number (5162642100).

Almost surely, 2^122102111121 is an apocalyptic number.

It is an amenable number.

122102111121 is a deficient number, since it is larger than the sum of its proper divisors (43102436079).

122102111121 is a wasteful number, since it uses less digits than its factorization.

122102111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122102111121 its reverse (121111201221), we get a palindrome (243213312342).

The spelling of 122102111121 in words is "one hundred twenty-two billion, one hundred two million, one hundred eleven thousand, one hundred twenty-one".