212031223212 has 24 divisors (see below), whose sum is σ = 502850006512. Its totient is φ = 69518433600.

The previous prime is 212031223177. The next prime is 212031223213. The reversal of 212031223212 is 212322130212.

It is not an unprimeable number, because it can be changed into a prime (212031223213) 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, 144829339 + ... + 144830802.

Almost surely, 2^212031223212 is an apocalyptic number.

It is an amenable number.

212031223212 is an abundant number, since it is smaller than the sum of its proper divisors (290818783300).

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

212031223212 is a wasteful number, since it uses less digits than its factorization.

212031223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289660209 (or 289660207 counting only the distinct ones).

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

Adding to 212031223212 its reverse (212322130212), we get a palindrome (424353353424).

The spelling of 212031223212 in words is "two hundred twelve billion, thirty-one million, two hundred twenty-three thousand, two hundred twelve".