33211222212 has 24 divisors (see below), whose sum is σ = 88563259456. Its totient is φ = 9488920608.

The previous prime is 33211222207. The next prime is 33211222217. The reversal of 33211222212 is 21222211233.

It is an interprime number because it is at equal distance from previous prime (33211222207) and next prime (33211222217).

It is a super-2 number, since 2×33211222212² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (33211222217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197685763 + ... + 197685930.

Almost surely, 2^33211222212 is an apocalyptic number.

It is an amenable number.

33211222212 is an abundant number, since it is smaller than the sum of its proper divisors (55352037244).

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

33211222212 is a wasteful number, since it uses less digits than its factorization.

33211222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395371707 (or 395371705 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

Adding to 33211222212 its reverse (21222211233), we get a palindrome (54433433445).

The spelling of 33211222212 in words is "thirty-three billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twelve".