122222100121 has 48 divisors (see below), whose sum is σ = 141914787840. Its totient is φ = 105039554400.

The previous prime is 122222100113. The next prime is 122222100131. The reversal of 122222100121 is 121001222221.

It is a happy number.

It is not a de Polignac number, because 122222100121 - 2³ = 122222100113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122222100095 and 122222100104.

It is not an unprimeable number, because it can be changed into a prime (122222100101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36956950 + ... + 36960256.

It is an arithmetic number, because the mean of its divisors is an integer number (2956558080).

Almost surely, 2^122222100121 is an apocalyptic number.

122222100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122222100121 is a deficient number, since it is larger than the sum of its proper divisors (19692687719).

122222100121 is a wasteful number, since it uses less digits than its factorization.

122222100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586 (or 3575 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122222100121 its reverse (121001222221), we get a palindrome (243223322342).

It can be divided in two parts, 122222100 and 121, that added together give a palindrome (122222221).

The spelling of 122222100121 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".