122221013121 has 12 divisors (see below), whose sum is σ = 176665197072. Its totient is φ = 81423567576.

The previous prime is 122221013111. The next prime is 122221013153. The reversal of 122221013121 is 121310122221.

It is not a de Polignac number, because 122221013121 - 2⁹ = 122221012609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122221013094 and 122221013103.

It is not an unprimeable number, because it can be changed into a prime (122221013111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4745431 + ... + 4771116.

It is an arithmetic number, because the mean of its divisors is an integer number (14722099756).

Almost surely, 2^122221013121 is an apocalyptic number.

It is an amenable number.

122221013121 is a deficient number, since it is larger than the sum of its proper divisors (54444183951).

122221013121 is a wasteful number, since it uses less digits than its factorization.

122221013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9517980 (or 9517977 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 122221013121 its reverse (121310122221), we get a palindrome (243531135342).

The spelling of 122221013121 in words is "one hundred twenty-two billion, two hundred twenty-one million, thirteen thousand, one hundred twenty-one".