122100021121 has 16 divisors (see below), whose sum is σ = 132968908800. Its totient is φ = 111448866240.

The previous prime is 122100021107. The next prime is 122100021139. The reversal of 122100021121 is 121120001221.

It is a cyclic number.

It is not a de Polignac number, because 122100021121 - 2⁵ = 122100021089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (122100021181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290616 + ... + 573286.

It is an arithmetic number, because the mean of its divisors is an integer number (8310556800).

Almost surely, 2^122100021121 is an apocalyptic number.

It is an amenable number.

122100021121 is a deficient number, since it is larger than the sum of its proper divisors (10868887679).

122100021121 is a wasteful number, since it uses less digits than its factorization.

122100021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283056.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122100021121 its reverse (121120001221), we get a palindrome (243220022342).

The spelling of 122100021121 in words is "one hundred twenty-two billion, one hundred million, twenty-one thousand, one hundred twenty-one".