3221418121 has 2 divisors, whose sum is σ = 3221418122. Its totient is φ = 3221418120.

The previous prime is 3221418097. The next prime is 3221418133. The reversal of 3221418121 is 1218141223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2141375625 + 1080042496 = 46275^2 + 32864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221418121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3221418191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610709060 + 1610709061.

It is an arithmetic number, because the mean of its divisors is an integer number (1610709061).

Almost surely, 2^3221418121 is an apocalyptic number.

It is an amenable number.

3221418121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221418121 is an equidigital number, since it uses as much as digits as its factorization.

3221418121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 25.

The square root of 3221418121 is about 56757.5380103824. The cubic root of 3221418121 is about 1476.8930012347.

Adding to 3221418121 its reverse (1218141223), we get a palindrome (4439559344).

The spelling of 3221418121 in words is "three billion, two hundred twenty-one million, four hundred eighteen thousand, one hundred twenty-one".