222220341221 has 4 divisors (see below), whose sum is σ = 222223300812. Its totient is φ = 222217381632.

The previous prime is 222220341181. The next prime is 222220341229. The reversal of 222220341221 is 122143022222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53504778721 + 168715562500 = 231311^2 + 410750^2 .

It is a cyclic number.

It is not a de Polignac number, because 222220341221 - 2⁶ = 222220341157 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 (222220341229) 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, 1364156 + ... + 1518341.

It is an arithmetic number, because the mean of its divisors is an integer number (55555825203).

Almost surely, 2^222220341221 is an apocalyptic number.

It is an amenable number.

222220341221 is a deficient number, since it is larger than the sum of its proper divisors (2959591).

222220341221 is an equidigital number, since it uses as much as digits as its factorization.

222220341221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959590.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 222220341221 its reverse (122143022222), we get a palindrome (344363363443).

The spelling of 222220341221 in words is "two hundred twenty-two billion, two hundred twenty million, three hundred forty-one thousand, two hundred twenty-one".