212100233212 has 18 divisors (see below), whose sum is σ = 431775475152. Its totient is φ = 90900099864.

The previous prime is 212100233203. The next prime is 212100233221. The reversal of 212100233212 is 212332001212.

It is an interprime number because it is at equal distance from previous prime (212100233203) and next prime (212100233221).

It is a self number, because there is not a number n which added to its sum of digits gives 212100233212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541071828 + ... + 541072219.

Almost surely, 2^212100233212 is an apocalyptic number.

It is an amenable number.

212100233212 is an abundant number, since it is smaller than the sum of its proper divisors (219675241940).

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

212100233212 is a wasteful number, since it uses less digits than its factorization.

212100233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082144065 (or 1082144056 counting only the distinct ones).

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

Adding to 212100233212 its reverse (212332001212), we get a palindrome (424432234424).

The spelling of 212100233212 in words is "two hundred twelve billion, one hundred million, two hundred thirty-three thousand, two hundred twelve".