33221201212 has 24 divisors (see below), whose sum is σ = 60573381120. Its totient is φ = 15924536880.

The previous prime is 33221201207. The next prime is 33221201239. The reversal of 33221201212 is 21210212233.

It is a super-2 number, since 2×33221201212² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33221201212.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1238662 + ... + 1265197.

It is an arithmetic number, because the mean of its divisors is an integer number (2523890880).

Almost surely, 2^33221201212 is an apocalyptic number.

It is an amenable number.

33221201212 is a deficient number, since it is larger than the sum of its proper divisors (27352179908).

33221201212 is a wasteful number, since it uses less digits than its factorization.

33221201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504001 (or 2503999 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 33221201212 its reverse (21210212233), we get a palindrome (54431413445).

The spelling of 33221201212 in words is "thirty-three billion, two hundred twenty-one million, two hundred one thousand, two hundred twelve".