2222331221 has 8 divisors (see below), whose sum is σ = 2475944064. Its totient is φ = 1977315520.

The previous prime is 2222331211. The next prime is 2222331227. The reversal of 2222331221 is 1221332222.

It is a happy number.

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 2222331221 - 2¹⁰ = 2222330197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222331193 and 2222331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222331227) 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, 2148740 + ... + 2149773.

It is an arithmetic number, because the mean of its divisors is an integer number (309493008).

Almost surely, 2^2222331221 is an apocalyptic number.

It is an amenable number.

2222331221 is a deficient number, since it is larger than the sum of its proper divisors (253612843).

2222331221 is a wasteful number, since it uses less digits than its factorization.

2222331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298571.

The product of its digits is 576, while the sum is 20.

The square root of 2222331221 is about 47141.6081715505. The cubic root of 2222331221 is about 1304.9772158302.

Adding to 2222331221 its reverse (1221332222), we get a palindrome (3443663443).

The spelling of 2222331221 in words is "two billion, two hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty-one".