33213210212 has 24 divisors (see below), whose sum is σ = 71536145856. Its totient is φ = 13139291808.

The previous prime is 33213210211. The next prime is 33213210221. The reversal of 33213210212 is 21201231233.

It is a super-2 number, since 2×33213210212² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33213210211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45622178 + ... + 45622905.

It is an arithmetic number, because the mean of its divisors is an integer number (2980672744).

Almost surely, 2^33213210212 is an apocalyptic number.

It is an amenable number.

33213210212 is an abundant number, since it is smaller than the sum of its proper divisors (38322935644).

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

33213210212 is a wasteful number, since it uses less digits than its factorization.

33213210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91245107 (or 91245105 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33213210212 its reverse (21201231233), we get a palindrome (54414441445).

The spelling of 33213210212 in words is "thirty-three billion, two hundred thirteen million, two hundred ten thousand, two hundred twelve".