3221131201 has 2 divisors, whose sum is σ = 3221131202. Its totient is φ = 3221131200.

The previous prime is 3221131189. The next prime is 3221131223. The reversal of 3221131201 is 1021311223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1637011600 + 1584119601 = 40460^2 + 39801^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221131201 - 2⁷ = 3221131073 is a prime.

It is not a weakly prime, because it can be changed into another prime (3221131231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610565600 + 1610565601.

It is an arithmetic number, because the mean of its divisors is an integer number (1610565601).

Almost surely, 2^3221131201 is an apocalyptic number.

It is an amenable number.

3221131201 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221131201 is an equidigital number, since it uses as much as digits as its factorization.

3221131201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3221131201 is about 56755.0103603197. The cubic root of 3221131201 is about 1476.8491527695.

Adding to 3221131201 its reverse (1021311223), we get a palindrome (4242442424).

The spelling of 3221131201 in words is "three billion, two hundred twenty-one million, one hundred thirty-one thousand, two hundred one".