222121221112222 has 16 divisors (see below), whose sum is σ = 333355208925600. Its totient is φ = 111002821400160.

The previous prime is 222121221112199. The next prime is 222121221112229. The reversal of 222121221112222 is 222211122121222.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121221112229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138429304 + ... + 140024692.

It is an arithmetic number, because the mean of its divisors is an integer number (20834700557850).

Almost surely, 2^{222121221112222} is an apocalyptic number.

222121221112222 is a deficient number, since it is larger than the sum of its proper divisors (111233987813378).

222121221112222 is a wasteful number, since it uses less digits than its factorization.

222121221112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631571.

The product of its digits is 1024, while the sum is 25.

Adding to 222121221112222 its reverse (222211122121222), we get a palindrome (444332343233444).

The spelling of 222121221112222 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".