222211102112221 has 4 divisors (see below), whose sum is σ = 223574360407552. Its totient is φ = 220847843816892.

The previous prime is 222211102112201. The next prime is 222211102112267. The reversal of 222211102112221 is 122211201112222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222211102112221 - 2¹⁵ = 222211102079453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222211102112192 and 222211102112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222211102112201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681629147421 + ... + 681629147746.

It is an arithmetic number, because the mean of its divisors is an integer number (55893590101888).

Almost surely, 2^{222211102112221} is an apocalyptic number.

It is an amenable number.

222211102112221 is a deficient number, since it is larger than the sum of its proper divisors (1363258295331).

222211102112221 is a wasteful number, since it uses less digits than its factorization.

222211102112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363258295330.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222211102112221 its reverse (122211201112222), we get a palindrome (344422303224443).

Subtracting from 222211102112221 its reverse (122211201112222), we obtain a palindrome (99999900999999).

The spelling of 222211102112221 in words is "two hundred twenty-two trillion, two hundred eleven billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".