222002200121 has 16 divisors (see below), whose sum is σ = 247021125120. Its totient is φ = 198226741440.

The previous prime is 222002200111. The next prime is 222002200129. The reversal of 222002200121 is 121002200222.

It is a de Polignac number, because none of the positive numbers 2^k-222002200121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222002200096 and 222002200105.

It is not an unprimeable number, because it can be changed into a prime (222002200129) 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, 2220161 + ... + 2317998.

It is an arithmetic number, because the mean of its divisors is an integer number (15438820320).

Almost surely, 2^222002200121 is an apocalyptic number.

It is an amenable number.

222002200121 is a deficient number, since it is larger than the sum of its proper divisors (25018924999).

222002200121 is a wasteful number, since it uses less digits than its factorization.

222002200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538296.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222002200121 its reverse (121002200222), we get a palindrome (343004400343).

The spelling of 222002200121 in words is "two hundred twenty-two billion, two million, two hundred thousand, one hundred twenty-one".