222232123221 has 64 divisors (see below), whose sum is σ = 316784438784. Its totient is φ = 138276864000.

The previous prime is 222232123207. The next prime is 222232123247. The reversal of 222232123221 is 122321232222.

It is not a de Polignac number, because 222232123221 - 2⁵ = 222232123189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222232123191 and 222232123200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222232123291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 554194621 + ... + 554195021.

It is an arithmetic number, because the mean of its divisors is an integer number (4949756856).

Almost surely, 2^222232123221 is an apocalyptic number.

It is an amenable number.

222232123221 is a deficient number, since it is larger than the sum of its proper divisors (94552315563).

222232123221 is a wasteful number, since it uses less digits than its factorization.

222232123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214.

The product of its digits is 2304, while the sum is 24.

Adding to 222232123221 its reverse (122321232222), we get a palindrome (344553355443).

The spelling of 222232123221 in words is "two hundred twenty-two billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred twenty-one".