33213012222 has 32 divisors (see below), whose sum is σ = 71550466848. Its totient is φ = 10217281536.

The previous prime is 33213012037. The next prime is 33213012227. The reversal of 33213012222 is 22221031233.

It is a happy number.

It is a super-2 number, since 2×33213012222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213012227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360618 + ... + 443250.

It is an arithmetic number, because the mean of its divisors is an integer number (2235952089).

Almost surely, 2^33213012222 is an apocalyptic number.

33213012222 is an abundant number, since it is smaller than the sum of its proper divisors (38337454626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33213012222 is a wasteful number, since it uses less digits than its factorization.

33213012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87804.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 33213012222 its reverse (22221031233), we get a palindrome (55434043455).

The spelling of 33213012222 in words is "thirty-three billion, two hundred thirteen million, twelve thousand, two hundred twenty-two".