3221322232981 has 2 divisors, whose sum is σ = 3221322232982. Its totient is φ = 3221322232980.

The previous prime is 3221322232979. The next prime is 3221322233021. The reversal of 3221322232981 is 1892322231223.

It is an a-pointer prime, because the next prime (3221322233021) can be obtained adding 3221322232981 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2588128042756 + 633194190225 = 1608766^2 + 795735^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221322232981 - 2¹ = 3221322232979 is a prime.

It is a super-2 number, since 2×3221322232981² (a number of 26 digits) contains 22 as substring.

Together with 3221322232979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221322332981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610661116490 + 1610661116491.

It is an arithmetic number, because the mean of its divisors is an integer number (1610661116491).

Almost surely, 2^{3221322232981} is an apocalyptic number.

It is an amenable number.

3221322232981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221322232981 is an equidigital number, since it uses as much as digits as its factorization.

3221322232981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The spelling of 3221322232981 in words is "three trillion, two hundred twenty-one billion, three hundred twenty-two million, two hundred thirty-two thousand, nine hundred eighty-one".