222222112021 has 32 divisors (see below), whose sum is σ = 288955376640. Its totient is φ = 166149156096.

The previous prime is 222222112009. The next prime is 222222112039. The reversal of 222222112021 is 120211222222.

It is not a de Polignac number, because 222222112021 - 2⁹ = 222222111509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222222112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222112001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 771786 + ... + 1019851.

It is an arithmetic number, because the mean of its divisors is an integer number (9029855520).

Almost surely, 2^222222112021 is an apocalyptic number.

It is an amenable number.

222222112021 is a deficient number, since it is larger than the sum of its proper divisors (66733264619).

222222112021 is a wasteful number, since it uses less digits than its factorization.

222222112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791733.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222112021 its reverse (120211222222), we get a palindrome (342433334243).

The spelling of 222222112021 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".