222201102002221 has 4 divisors (see below), whose sum is σ = 225967222375200. Its totient is φ = 218434981629244.

The previous prime is 222201102002203. The next prime is 222201102002251. The reversal of 222201102002221 is 122200201102222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222201102002221 - 2¹⁷ = 222201101871149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201102002251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883060186401 + ... + 1883060186518.

It is an arithmetic number, because the mean of its divisors is an integer number (56491805593800).

Almost surely, 2^{222201102002221} is an apocalyptic number.

It is an amenable number.

222201102002221 is a deficient number, since it is larger than the sum of its proper divisors (3766120372979).

222201102002221 is an equidigital number, since it uses as much as digits as its factorization.

222201102002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766120372978.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222201102002221 its reverse (122200201102222), we get a palindrome (344401303104443).

The spelling of 222201102002221 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred two million, two thousand, two hundred twenty-one".