3421201221331 has 2 divisors, whose sum is σ = 3421201221332. Its totient is φ = 3421201221330.

The previous prime is 3421201221311. The next prime is 3421201221337. The reversal of 3421201221331 is 1331221021243.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3421201221331 - 2⁵ = 3421201221299 is a prime.

It is a super-2 number, since 2×3421201221331² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3421201221296 and 3421201221305.

It is not a weakly prime, because it can be changed into another prime (3421201221337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710600610665 + 1710600610666.

It is an arithmetic number, because the mean of its divisors is an integer number (1710600610666).

Almost surely, 2^{3421201221331} is an apocalyptic number.

3421201221331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421201221331 is an equidigital number, since it uses as much as digits as its factorization.

3421201221331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 3421201221331 its reverse (1331221021243), we get a palindrome (4752422242574).

The spelling of 3421201221331 in words is "three trillion, four hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, three hundred thirty-one".