3100022221 has 2 divisors, whose sum is σ = 3100022222. Its totient is φ = 3100022220.

The previous prime is 3100022207. The next prime is 3100022269. The reversal of 3100022221 is 1222200013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2222085321 + 877936900 = 47139^2 + 29630^2 .

It is a cyclic number.

It is not a de Polignac number, because 3100022221 - 2⁹ = 3100021709 is a prime.

It is a super-2 number, since 2×3100022221² = 19220275541387545682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3100022201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550011110 + 1550011111.

It is an arithmetic number, because the mean of its divisors is an integer number (1550011111).

Almost surely, 2^3100022221 is an apocalyptic number.

It is an amenable number.

3100022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3100022221 is an equidigital number, since it uses as much as digits as its factorization.

3100022221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 3100022221 is about 55677.8431784134. The cubic root of 3100022221 is about 1458.1032197360.

Adding to 3100022221 its reverse (1222200013), we get a palindrome (4322222234).

The spelling of 3100022221 in words is "three billion, one hundred million, twenty-two thousand, two hundred twenty-one".