122221200121 has 16 divisors (see below), whose sum is σ = 126832124160. Its totient is φ = 117688970880.

The previous prime is 122221200109. The next prime is 122221200163. The reversal of 122221200121 is 121002122221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122221200121 - 2⁷ = 122221199993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221200095 and 122221200104.

It is not an unprimeable number, because it can be changed into a prime (122221300121) 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, 12993406 + ... + 13002808.

It is an arithmetic number, because the mean of its divisors is an integer number (7927007760).

Almost surely, 2^122221200121 is an apocalyptic number.

It is an amenable number.

122221200121 is a deficient number, since it is larger than the sum of its proper divisors (4610924039).

122221200121 is an equidigital number, since it uses as much as digits as its factorization.

122221200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13536.

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

Adding to 122221200121 its reverse (121002122221), we get a palindrome (243223322342).

The spelling of 122221200121 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred thousand, one hundred twenty-one".