222123311221 has 8 divisors (see below), whose sum is σ = 254035391040. Its totient is φ = 190256275968.

The previous prime is 222123311219. The next prime is 222123311237. The reversal of 222123311221 is 122113321222.

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

It is a cyclic number.

It is not a de Polignac number, because 222123311221 - 2¹ = 222123311219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222123311192 and 222123311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123311021) 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, 11250571 + ... + 11270296.

It is an arithmetic number, because the mean of its divisors is an integer number (31754423880).

Almost surely, 2^222123311221 is an apocalyptic number.

It is an amenable number.

222123311221 is a deficient number, since it is larger than the sum of its proper divisors (31912079819).

222123311221 is a wasteful number, since it uses less digits than its factorization.

222123311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22522283.

The product of its digits is 576, while the sum is 22.

Adding to 222123311221 its reverse (122113321222), we get a palindrome (344236632443).

The spelling of 222123311221 in words is "two hundred twenty-two billion, one hundred twenty-three million, three hundred eleven thousand, two hundred twenty-one".