3221412121 has 2 divisors, whose sum is σ = 3221412122. Its totient is φ = 3221412120.

The previous prime is 3221412097. The next prime is 3221412149. The reversal of 3221412121 is 1212141223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2231617600 + 989794521 = 47240^2 + 31461^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221412121 - 2²⁷ = 3087194393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3221418121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610706060 + 1610706061.

It is an arithmetic number, because the mean of its divisors is an integer number (1610706061).

Almost surely, 2^3221412121 is an apocalyptic number.

It is an amenable number.

3221412121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221412121 is an equidigital number, since it uses as much as digits as its factorization.

3221412121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3221412121 is about 56757.4851539425. The cubic root of 3221412121 is about 1476.8920843131.

Adding to 3221412121 its reverse (1212141223), we get a palindrome (4433553344).

It can be divided in two parts, 322141 and 2121, that multiplied together give a triangular number (683261061 = T₃₆₉₆₆).

The spelling of 3221412121 in words is "three billion, two hundred twenty-one million, four hundred twelve thousand, one hundred twenty-one".