222212111110221 has 16 divisors (see below), whose sum is σ = 325436501399040. Its totient is φ = 134242556825520.

The previous prime is 222212111110211. The next prime is 222212111110237. The reversal of 222212111110221 is 122011111212222.

It is not a de Polignac number, because 222212111110221 - 2²⁶ = 222212044001357 is a prime.

It is a super-2 number, since 2×222212111110221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212111110201) 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, 84749087595 + ... + 84749090216.

It is an arithmetic number, because the mean of its divisors is an integer number (20339781337440).

Almost surely, 2^{222212111110221} is an apocalyptic number.

It is an amenable number.

222212111110221 is a deficient number, since it is larger than the sum of its proper divisors (103224390288819).

222212111110221 is a wasteful number, since it uses less digits than its factorization.

222212111110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169498177856.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222212111110221 its reverse (122011111212222), we get a palindrome (344223222322443).

The spelling of 222212111110221 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-one".