3221212302281 has 2 divisors, whose sum is σ = 3221212302282. Its totient is φ = 3221212302280.

The previous prime is 3221212302257. The next prime is 3221212302293. The reversal of 3221212302281 is 1822032121223.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2708957183881 + 512255118400 = 1645891^2 + 715720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221212302281 is a prime.

It is a super-2 number, since 2×3221212302281² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3221212302221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610606151140 + 1610606151141.

It is an arithmetic number, because the mean of its divisors is an integer number (1610606151141).

Almost surely, 2^{3221212302281} is an apocalyptic number.

It is an amenable number.

3221212302281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221212302281 is an equidigital number, since it uses as much as digits as its factorization.

3221212302281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 3221212302281 in words is "three trillion, two hundred twenty-one billion, two hundred twelve million, three hundred two thousand, two hundred eighty-one".