1321112004 has 24 divisors (see below), whose sum is σ = 3157781088. Its totient is φ = 429629760.

The previous prime is 1321112003. The next prime is 1321112021. The reversal of 1321112004 is 4002111231.

1321112004 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1321112004² = 3490673854225792032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321112003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342102 + ... + 1343085.

It is an arithmetic number, because the mean of its divisors is an integer number (131574212).

Almost surely, 2^1321112004 is an apocalyptic number.

It is an amenable number.

1321112004 is an abundant number, since it is smaller than the sum of its proper divisors (1836669084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321112004 is a wasteful number, since it uses less digits than its factorization.

1321112004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685235 (or 2685233 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1321112004 is about 36347.1044788990. The cubic root of 1321112004 is about 1097.2692607358.

Adding to 1321112004 its reverse (4002111231), we get a palindrome (5323223235).

The spelling of 1321112004 in words is "one billion, three hundred twenty-one million, one hundred twelve thousand, four".