1321044412 has 18 divisors (see below), whose sum is σ = 2320347848. Its totient is φ = 658096752.

The previous prime is 1321044391. The next prime is 1321044481. The reversal of 1321044412 is 2144401231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341473 + ... + 345319.

Almost surely, 2^1321044412 is an apocalyptic number.

It is an amenable number.

1321044412 is a deficient number, since it is larger than the sum of its proper divisors (999303436).

1321044412 is an equidigital number, since it uses as much as digits as its factorization.

1321044412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437 (or 4142 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1321044412 is about 36346.1746542879. The cubic root of 1321044412 is about 1097.2505472358.

Adding to 1321044412 its reverse (2144401231), we get a palindrome (3465445643).

The spelling of 1321044412 in words is "one billion, three hundred twenty-one million, forty-four thousand, four hundred twelve".