1004312121 has 8 divisors (see below), whose sum is σ = 1367574144. Its totient is φ = 655295760.

The previous prime is 1004312117. The next prime is 1004312123. The reversal of 1004312121 is 1212134001.

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

It is not a de Polignac number, because 1004312121 - 2² = 1004312117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004312121.

It is not an unprimeable number, because it can be changed into a prime (1004312123) 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, 3561250 + ... + 3561531.

It is an arithmetic number, because the mean of its divisors is an integer number (170946768).

Almost surely, 2^1004312121 is an apocalyptic number.

It is an amenable number.

1004312121 is a deficient number, since it is larger than the sum of its proper divisors (363262023).

1004312121 is an equidigital number, since it uses as much as digits as its factorization.

1004312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122831.

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

The square root of 1004312121 is about 31690.8838784910. The cubic root of 1004312121 is about 1001.4353125589.

Adding to 1004312121 its reverse (1212134001), we get a palindrome (2216446122).

The spelling of 1004312121 in words is "one billion, four million, three hundred twelve thousand, one hundred twenty-one".