3122221010221 has 2 divisors, whose sum is σ = 3122221010222. Its totient is φ = 3122221010220.

The previous prime is 3122221010201. The next prime is 3122221010243. The reversal of 3122221010221 is 1220101222213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2206668656196 + 915552354025 = 1485486^2 + 956845^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122221010221 - 2⁵ = 3122221010189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3122221010201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561110505110 + 1561110505111.

It is an arithmetic number, because the mean of its divisors is an integer number (1561110505111).

Almost surely, 2^{3122221010221} is an apocalyptic number.

It is an amenable number.

3122221010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122221010221 is an equidigital number, since it uses as much as digits as its factorization.

3122221010221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 3122221010221 its reverse (1220101222213), we get a palindrome (4342322232434).

The spelling of 3122221010221 in words is "three trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, two hundred twenty-one".