1304433341221 has 4 divisors (see below), whose sum is σ = 1381164714252. Its totient is φ = 1227701968192.

The previous prime is 1304433341147. The next prime is 1304433341243. The reversal of 1304433341221 is 1221433344031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 579670572321 + 724762768900 = 761361^2 + 851330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304433341221 - 2¹⁷ = 1304433210149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304433341821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38365686490 + ... + 38365686523.

It is an arithmetic number, because the mean of its divisors is an integer number (345291178563).

Almost surely, 2^{1304433341221} is an apocalyptic number.

It is an amenable number.

1304433341221 is a deficient number, since it is larger than the sum of its proper divisors (76731373031).

1304433341221 is an equidigital number, since it uses as much as digits as its factorization.

1304433341221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76731373030.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1304433341221 its reverse (1221433344031), we get a palindrome (2525866685252).

The spelling of 1304433341221 in words is "one trillion, three hundred four billion, four hundred thirty-three million, three hundred forty-one thousand, two hundred twenty-one".