321121441 has 2 divisors, whose sum is σ = 321121442. Its totient is φ = 321121440.

The previous prime is 321121417. The next prime is 321121447. The reversal of 321121441 is 144121123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248377600 + 72743841 = 15760^2 + 8529^2 .

It is a cyclic number.

It is not a de Polignac number, because 321121441 - 2¹³ = 321113249 is a prime.

It is not a weakly prime, because it can be changed into another prime (321121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160560720 + 160560721.

It is an arithmetic number, because the mean of its divisors is an integer number (160560721).

Almost surely, 2^321121441 is an apocalyptic number.

It is an amenable number.

321121441 is a deficient number, since it is larger than the sum of its proper divisors (1).

321121441 is an equidigital number, since it uses as much as digits as its factorization.

321121441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 321121441 is about 17919.8616345105. The cubic root of 321121441 is about 684.7884625728.

Adding to 321121441 its reverse (144121123), we get a palindrome (465242564).

The spelling of 321121441 in words is "three hundred twenty-one million, one hundred twenty-one thousand, four hundred forty-one".