1331243222 has 8 divisors (see below), whose sum is σ = 2012108472. Its totient is φ = 660540400.

The previous prime is 1331243201. The next prime is 1331243237. The reversal of 1331243222 is 2223421331.

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

It is a super-2 number, since 2×1331243222² = 3544417032241882568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540279 + ... + 2540802.

It is an arithmetic number, because the mean of its divisors is an integer number (251513559).

Almost surely, 2^1331243222 is an apocalyptic number.

1331243222 is a deficient number, since it is larger than the sum of its proper divisors (680865250).

1331243222 is a wasteful number, since it uses less digits than its factorization.

1331243222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081214.

The product of its digits is 1728, while the sum is 23.

The square root of 1331243222 is about 36486.2059140163. The cubic root of 1331243222 is about 1100.0669992249.

Adding to 1331243222 its reverse (2223421331), we get a palindrome (3554664553).

The spelling of 1331243222 in words is "one billion, three hundred thirty-one million, two hundred forty-three thousand, two hundred twenty-two".