3222222121 has 2 divisors, whose sum is σ = 3222222122. Its totient is φ = 3222222120.

The previous prime is 3222222023. The next prime is 3222222137. The reversal of 3222222121 is 1212222223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2429011225 + 793210896 = 49285^2 + 28164^2 .

It is a cyclic number.

It is not a de Polignac number, because 3222222121 - 2¹⁷ = 3222091049 is a prime.

It is not a weakly prime, because it can be changed into another prime (3222225121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611111060 + 1611111061.

It is an arithmetic number, because the mean of its divisors is an integer number (1611111061).

Almost surely, 2^3222222121 is an apocalyptic number.

It is an amenable number.

3222222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3222222121 is an equidigital number, since it uses as much as digits as its factorization.

3222222121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 19.

The square root of 3222222121 is about 56764.6203281586. The cubic root of 3222222121 is about 1477.0158584317.

Adding to 3222222121 its reverse (1212222223), we get a palindrome (4434444344).

The spelling of 3222222121 in words is "three billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".