2223222111221 has 8 divisors (see below), whose sum is σ = 2229771801600. Its totient is φ = 2216673446832.

The previous prime is 2223222111193. The next prime is 2223222111277. The reversal of 2223222111221 is 1221112223222.

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 2223222111221 - 2¹⁴ = 2223222094837 is a prime.

It is a super-2 number, since 2×2223222111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223222111281) 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, 4197356 + ... + 4697258.

It is an arithmetic number, because the mean of its divisors is an integer number (278721475200).

Almost surely, 2^{2223222111221} is an apocalyptic number.

It is an amenable number.

2223222111221 is a deficient number, since it is larger than the sum of its proper divisors (6549690379).

2223222111221 is a wasteful number, since it uses less digits than its factorization.

2223222111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512995.

The product of its digits is 768, while the sum is 23.

Adding to 2223222111221 its reverse (1221112223222), we get a palindrome (3444334334443).

The spelling of 2223222111221 in words is "two trillion, two hundred twenty-three billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".