222222201120221 has 4 divisors (see below), whose sum is σ = 222223045413792. Its totient is φ = 222221356826652.

The previous prime is 222222201120053. The next prime is 222222201120239. The reversal of 222222201120221 is 122021102222222.

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 a de Polignac number, because none of the positive numbers 2^k-222222201120221 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 (222222201126221) 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, 421751855 + ... + 422278428.

It is an arithmetic number, because the mean of its divisors is an integer number (55555761353448).

Almost surely, 2^{222222201120221} is an apocalyptic number.

It is an amenable number.

222222201120221 is a deficient number, since it is larger than the sum of its proper divisors (844293571).

222222201120221 is an equidigital number, since it uses as much as digits as its factorization.

222222201120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844293570.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 222222201120221 its reverse (122021102222222), we get a palindrome (344243303342443).

The spelling of 222222201120221 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred one million, one hundred twenty thousand, two hundred twenty-one".