222202111212221 has 8 divisors (see below), whose sum is σ = 253945485384960. Its totient is φ = 190458790896528.

The previous prime is 222202111212217. The next prime is 222202111212229. The reversal of 222202111212221 is 122212111202222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222202111212221 - 2² = 222202111212217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202111212229) 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, 4198181 + ... + 21494858.

It is an arithmetic number, because the mean of its divisors is an integer number (31743185673120).

Almost surely, 2^{222202111212221} is an apocalyptic number.

It is an amenable number.

222202111212221 is a deficient number, since it is larger than the sum of its proper divisors (31743374172739).

222202111212221 is a wasteful number, since it uses less digits than its factorization.

222202111212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26928523.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222202111212221 its reverse (122212111202222), we get a palindrome (344414222414443).

Subtracting from 222202111212221 its reverse (122212111202222), we obtain a palindrome (99990000009999).

The spelling of 222202111212221 in words is "two hundred twenty-two trillion, two hundred two billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-one".