3433221221 has 2 divisors, whose sum is σ = 3433221222. Its totient is φ = 3433221220.

The previous prime is 3433221193. The next prime is 3433221251. The reversal of 3433221221 is 1221223343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3423888196 + 9333025 = 58514^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 3433221221 - 2¹⁸ = 3432959077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3433221251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1716610610 + 1716610611.

It is an arithmetic number, because the mean of its divisors is an integer number (1716610611).

Almost surely, 2^3433221221 is an apocalyptic number.

It is an amenable number.

3433221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3433221221 is an equidigital number, since it uses as much as digits as its factorization.

3433221221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 3433221221 is about 58593.6960858419. The cubic root of 3433221221 is about 1508.5762380498.

Adding to 3433221221 its reverse (1221223343), we get a palindrome (4654444564).

The spelling of 3433221221 in words is "three billion, four hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty-one".