220222312221 has 16 divisors (see below), whose sum is σ = 296366040000. Its totient is φ = 145451027328.

The previous prime is 220222312207. The next prime is 220222312231. The reversal of 220222312221 is 122213222022.

It is not a de Polignac number, because 220222312221 - 2¹⁸ = 220222050077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220222312231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331806 + ... + 741983.

It is an arithmetic number, because the mean of its divisors is an integer number (18522877500).

Almost surely, 2^220222312221 is an apocalyptic number.

It is an amenable number.

220222312221 is a deficient number, since it is larger than the sum of its proper divisors (76143727779).

220222312221 is a wasteful number, since it uses less digits than its factorization.

220222312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074428.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 220222312221 its reverse (122213222022), we get a palindrome (342435534243).

The spelling of 220222312221 in words is "two hundred twenty billion, two hundred twenty-two million, three hundred twelve thousand, two hundred twenty-one".