1304221001 has 4 divisors (see below), whose sum is σ = 1331970432. Its totient is φ = 1276471572.

The previous prime is 1304220997. The next prime is 1304221007. The reversal of 1304221001 is 1001224031.

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 not a de Polignac number, because 1304221001 - 2² = 1304220997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304221007) 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, 13874645 + ... + 13874738.

It is an arithmetic number, because the mean of its divisors is an integer number (332992608).

Almost surely, 2^1304221001 is an apocalyptic number.

It is an amenable number.

1304221001 is a deficient number, since it is larger than the sum of its proper divisors (27749431).

1304221001 is an equidigital number, since it uses as much as digits as its factorization.

1304221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27749430.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1304221001 is about 36114.0000692252. Note that the first 4 decimals coincide. The cubic root of 1304221001 is about 1092.5728301075.

Adding to 1304221001 its reverse (1001224031), we get a palindrome (2305445032).

It can be divided in two parts, 13042 and 21001, that added together give a palindrome (34043).

The spelling of 1304221001 in words is "one billion, three hundred four million, two hundred twenty-one thousand, one".