33031220222 has 64 divisors (see below), whose sum is σ = 66680506368. Its totient is φ = 11851488000.

The previous prime is 33031220203. The next prime is 33031220227. The reversal of 33031220222 is 22202213033.

It is a junction number, because it is equal to n+sod(n) for n = 33031220194 and 33031220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33031220227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 843722 + ... + 882002.

It is an arithmetic number, because the mean of its divisors is an integer number (1041882912).

Almost surely, 2^33031220222 is an apocalyptic number.

33031220222 is an abundant number, since it is smaller than the sum of its proper divisors (33649286146).

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

33031220222 is a wasteful number, since it uses less digits than its factorization.

33031220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38745.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 33031220222 its reverse (22202213033), we get a palindrome (55233433255).

The spelling of 33031220222 in words is "thirty-three billion, thirty-one million, two hundred twenty thousand, two hundred twenty-two".