1312222033 has 4 divisors (see below), whose sum is σ = 1354551808. Its totient is φ = 1269892260.

The previous prime is 1312222019. The next prime is 1312222049. The reversal of 1312222033 is 3302222131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312222033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312222033.

It is not an unprimeable number, because it can be changed into a prime (1312222003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21164841 + ... + 21164902.

It is an arithmetic number, because the mean of its divisors is an integer number (338637952).

Almost surely, 2^1312222033 is an apocalyptic number.

It is an amenable number.

1312222033 is a deficient number, since it is larger than the sum of its proper divisors (42329775).

1312222033 is an equidigital number, since it uses as much as digits as its factorization.

1312222033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42329774.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1312222033 is about 36224.6053532678. The cubic root of 1312222033 is about 1094.8024867024.

Adding to 1312222033 its reverse (3302222131), we get a palindrome (4614444164).

The spelling of 1312222033 in words is "one billion, three hundred twelve million, two hundred twenty-two thousand, thirty-three".