3221130421 has 2 divisors, whose sum is σ = 3221130422. Its totient is φ = 3221130420.

The previous prime is 3221130397. The next prime is 3221130457. The reversal of 3221130421 is 1240311223.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2133054225 + 1088076196 = 46185^2 + 32986^2 .

It is an emirp because it is prime and its reverse (1240311223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3221130421 - 2⁵ = 3221130389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221130721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610565210 + 1610565211.

It is an arithmetic number, because the mean of its divisors is an integer number (1610565211).

Almost surely, 2^3221130421 is an apocalyptic number.

It is an amenable number.

3221130421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221130421 is an equidigital number, since it uses as much as digits as its factorization.

3221130421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3221130421 is about 56755.0034886793. The cubic root of 3221130421 is about 1476.8490335627.

Adding to 3221130421 its reverse (1240311223), we get a palindrome (4461441644).

The spelling of 3221130421 in words is "three billion, two hundred twenty-one million, one hundred thirty thousand, four hundred twenty-one".