222202001200121 has 8 divisors (see below), whose sum is σ = 227624530911624. Its totient is φ = 216779612855680.

The previous prime is 222202001200111. The next prime is 222202001200171. The reversal of 222202001200121 is 121002100202222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 741054114025 + 221460947086096 = 860845^2 + 14881564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222202001200121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222202001200121.

It is not an unprimeable number, because it can be changed into a prime (222202001200111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32156330 + ... + 38450403.

It is an arithmetic number, because the mean of its divisors is an integer number (28453066363953).

Almost surely, 2^{222202001200121} is an apocalyptic number.

It is an amenable number.

222202001200121 is a deficient number, since it is larger than the sum of its proper divisors (5422529711503).

222202001200121 is an equidigital number, since it uses as much as digits as its factorization.

222202001200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70683531.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222202001200121 its reverse (121002100202222), we get a palindrome (343204101402343).

The spelling of 222202001200121 in words is "two hundred twenty-two trillion, two hundred two billion, one million, two hundred thousand, one hundred twenty-one".