222112200112221 has 32 divisors (see below), whose sum is σ = 318109957862400. Its totient is φ = 137348354312960.

The previous prime is 222112200112211. The next prime is 222112200112237. The reversal of 222112200112221 is 122211002211222.

It is a cyclic number.

It is not a de Polignac number, because 222112200112221 - 2²¹ = 222112198015069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112200112211) 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, 2553651 + ... + 21230768.

It is an arithmetic number, because the mean of its divisors is an integer number (9940936183200).

Almost surely, 2^{222112200112221} is an apocalyptic number.

It is an amenable number.

222112200112221 is a deficient number, since it is larger than the sum of its proper divisors (95997757750179).

222112200112221 is a wasteful number, since it uses less digits than its factorization.

222112200112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23787089.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222112200112221 its reverse (122211002211222), we get a palindrome (344323202323443).

The spelling of 222112200112221 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".