212133655212 has 24 divisors (see below), whose sum is σ = 512046754800. Its totient is φ = 68272900416.

The previous prime is 212133655211. The next prime is 212133655271. The reversal of 212133655212 is 212556331212.

It is not an unprimeable number, because it can be changed into a prime (212133655211) 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, 304789387 + ... + 304790082.

It is an arithmetic number, because the mean of its divisors is an integer number (21335281450).

Almost surely, 2^212133655212 is an apocalyptic number.

It is an amenable number.

212133655212 is an abundant number, since it is smaller than the sum of its proper divisors (299913099588).

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

212133655212 is a wasteful number, since it uses less digits than its factorization.

212133655212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609579505 (or 609579503 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

Adding to 212133655212 its reverse (212556331212), we get a palindrome (424689986424).

The spelling of 212133655212 in words is "two hundred twelve billion, one hundred thirty-three million, six hundred fifty-five thousand, two hundred twelve".