122212100121 has 32 divisors (see below), whose sum is σ = 173180592000. Its totient is φ = 76514296320.

The previous prime is 122212100117. The next prime is 122212100123. The reversal of 122212100121 is 121001212221.

It is not a de Polignac number, because 122212100121 - 2² = 122212100117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122212100121.

It is not an unprimeable number, because it can be changed into a prime (122212100123) 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, 18824686 + ... + 18831176.

It is an arithmetic number, because the mean of its divisors is an integer number (5411893500).

Almost surely, 2^122212100121 is an apocalyptic number.

It is an amenable number.

122212100121 is a deficient number, since it is larger than the sum of its proper divisors (50968491879).

122212100121 is a wasteful number, since it uses less digits than its factorization.

122212100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12409.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122212100121 its reverse (121001212221), we get a palindrome (243213312342).

It can be divided in two parts, 122212100 and 121, that added together give a palindrome (122212221).

The spelling of 122212100121 in words is "one hundred twenty-two billion, two hundred twelve million, one hundred thousand, one hundred twenty-one".