33212200212 has 54 divisors (see below), whose sum is σ = 89181999998. Its totient is φ = 10419510528.

The previous prime is 33212200199. The next prime is 33212200223. The reversal of 33212200212 is 21200221233.

33212200212 is a `hidden beast` number, since 332 + 122 + 0 + 0 + 212 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13035702276 + 20176497936 = 114174^2 + 142044^2 .

It is a super-2 number, since 2×33212200212² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1585723 + ... + 1606530.

Almost surely, 2^33212200212 is an apocalyptic number.

It is an amenable number.

33212200212 is an abundant number, since it is smaller than the sum of its proper divisors (55969799786).

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

33212200212 is a wasteful number, since it uses less digits than its factorization.

33212200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192297 (or 3192275 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 33212200212 its reverse (21200221233), we get a palindrome (54412421445).

The spelling of 33212200212 in words is "thirty-three billion, two hundred twelve million, two hundred thousand, two hundred twelve".