222312002221 has 4 divisors (see below), whose sum is σ = 231977741472. Its totient is φ = 212646262972.

The previous prime is 222312002207. The next prime is 222312002257. The reversal of 222312002221 is 122200213222.

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 222312002221 - 2¹³ = 222311994029 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 (222312002261) 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, 4832869591 + ... + 4832869636.

It is an arithmetic number, because the mean of its divisors is an integer number (57994435368).

Almost surely, 2^222312002221 is an apocalyptic number.

It is an amenable number.

222312002221 is a deficient number, since it is larger than the sum of its proper divisors (9665739251).

222312002221 is an equidigital number, since it uses as much as digits as its factorization.

222312002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665739250.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222312002221 its reverse (122200213222), we get a palindrome (344512215443).

The spelling of 222312002221 in words is "two hundred twenty-two billion, three hundred twelve million, two thousand, two hundred twenty-one".