1312222 has 8 divisors (see below), whose sum is σ = 1996272. Its totient is φ = 646800.

The previous prime is 1312211. The next prime is 1312229. The reversal of 1312222 is 2222131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312229) 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, 4479 + ... + 4762.

It is an arithmetic number, because the mean of its divisors is an integer number (249534).

2^1312222 is an apocalyptic number.

1312222 is a deficient number, since it is larger than the sum of its proper divisors (684050).

1312222 is an equidigital number, since it uses as much as digits as its factorization.

1312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314.

The product of its digits is 48, while the sum is 13.

The square root of 1312222 is about 1145.5225881666. The cubic root of 1312222 is about 109.4802477525.

Adding to 1312222 its reverse (2222131), we get a palindrome (3534353).

Subtracting 1312222 from its reverse (2222131), we obtain a palindrome (909909).

The spelling of 1312222 in words is "one million, three hundred twelve thousand, two hundred twenty-two".