222201200121 has 32 divisors (see below), whose sum is σ = 308120440320. Its totient is φ = 142264012800.

The previous prime is 222201200113. The next prime is 222201200129. The reversal of 222201200121 is 121002102222.

It is an interprime number because it is at equal distance from previous prime (222201200113) and next prime (222201200129).

It is not a de Polignac number, because 222201200121 - 2³ = 222201200113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222201200121.

It is not an unprimeable number, because it can be changed into a prime (222201200129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19095121 + ... + 19106753.

It is an arithmetic number, because the mean of its divisors is an integer number (9628763760).

Almost surely, 2^222201200121 is an apocalyptic number.

It is an amenable number.

222201200121 is a deficient number, since it is larger than the sum of its proper divisors (85919240199).

222201200121 is a wasteful number, since it uses less digits than its factorization.

222201200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12817.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222201200121 its reverse (121002102222), we get a palindrome (343203302343).

The spelling of 222201200121 in words is "two hundred twenty-two billion, two hundred one million, two hundred thousand, one hundred twenty-one".