2222221331 has 8 divisors (see below), whose sum is σ = 2451481200. Its totient is φ = 1997501440.

The previous prime is 2222221321. The next prime is 2222221349. The reversal of 2222221331 is 1331222222.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2222221331 is a prime.

It is a super-2 number, since 2×2222221331² = 9876535287902823122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222221301) 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, 1133966 + ... + 1135923.

It is an arithmetic number, because the mean of its divisors is an integer number (306435150).

Almost surely, 2^2222221331 is an apocalyptic number.

2222221331 is a deficient number, since it is larger than the sum of its proper divisors (229259869).

2222221331 is a wasteful number, since it uses less digits than its factorization.

2222221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269989.

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

The square root of 2222221331 is about 47140.4426262631. The cubic root of 2222221331 is about 1304.9557059387.

Adding to 2222221331 its reverse (1331222222), we get a palindrome (3553443553).

The spelling of 2222221331 in words is "two billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred thirty-one".