33312333221 has 12 divisors (see below), whose sum is σ = 35403184740. Its totient is φ = 31338577920.

The previous prime is 33312333211. The next prime is 33312333227. The reversal of 33312333221 is 12233321333.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13685724196 + 19626609025 = 116986^2 + 140095^2 .

It is not a de Polignac number, because 33312333221 - 2⁶ = 33312333157 is a prime.

It is a super-2 number, since 2×33312333221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33312333227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642341 + ... + 692261.

It is an arithmetic number, because the mean of its divisors is an integer number (2950265395).

Almost surely, 2^33312333221 is an apocalyptic number.

It is an amenable number.

33312333221 is a deficient number, since it is larger than the sum of its proper divisors (2090851519).

33312333221 is a wasteful number, since it uses less digits than its factorization.

33312333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52264 (or 52247 counting only the distinct ones).

The product of its digits is 5832, while the sum is 26.

Adding to 33312333221 its reverse (12233321333), we get a palindrome (45545654554).

The spelling of 33312333221 in words is "thirty-three billion, three hundred twelve million, three hundred thirty-three thousand, two hundred twenty-one".