1312213222 has 8 divisors (see below), whose sum is σ = 1980857376. Its totient is φ = 651927432.

The previous prime is 1312213219. The next prime is 1312213223. The reversal of 1312213222 is 2223122131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1312213222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312213223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2089198 + ... + 2089825.

It is an arithmetic number, because the mean of its divisors is an integer number (247607172).

Almost surely, 2^1312213222 is an apocalyptic number.

1312213222 is a deficient number, since it is larger than the sum of its proper divisors (668644154).

1312213222 is a wasteful number, since it uses less digits than its factorization.

1312213222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179182.

The product of its digits is 288, while the sum is 19.

The square root of 1312213222 is about 36224.4837368319. The cubic root of 1312213222 is about 1094.8000363228.

Adding to 1312213222 its reverse (2223122131), we get a palindrome (3535335353).

The spelling of 1312213222 in words is "one billion, three hundred twelve million, two hundred thirteen thousand, two hundred twenty-two".