3221421061 has 2 divisors, whose sum is σ = 3221421062. Its totient is φ = 3221421060.

The previous prime is 3221421029. The next prime is 3221421109. The reversal of 3221421061 is 1601241223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3177464161 + 43956900 = 56369^2 + 6630^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221421061 - 2⁵ = 3221421029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221481061) 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, 1610710530 + 1610710531.

It is an arithmetic number, because the mean of its divisors is an integer number (1610710531).

Almost surely, 2^3221421061 is an apocalyptic number.

It is an amenable number.

3221421061 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221421061 is an equidigital number, since it uses as much as digits as its factorization.

3221421061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 3221421061 is about 56757.5639100200. The cubic root of 3221421061 is about 1476.8934505259.

Adding to 3221421061 its reverse (1601241223), we get a palindrome (4822662284).

The spelling of 3221421061 in words is "three billion, two hundred twenty-one million, four hundred twenty-one thousand, sixty-one".