213231004212 has 24 divisors (see below), whose sum is σ = 499770132736. Its totient is φ = 70758269568.

The previous prime is 213231004187. The next prime is 213231004223. The reversal of 213231004212 is 212400132312.

213231004212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213231004212² (a number of 23 digits) contains 22 as substring.

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, 39838693 + ... + 39844044.

Almost surely, 2^213231004212 is an apocalyptic number.

It is an amenable number.

213231004212 is an abundant number, since it is smaller than the sum of its proper divisors (286539128524).

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

213231004212 is a wasteful number, since it uses less digits than its factorization.

213231004212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79682967 (or 79682965 counting only the distinct ones).

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

Adding to 213231004212 its reverse (212400132312), we get a palindrome (425631136524).

The spelling of 213231004212 in words is "two hundred thirteen billion, two hundred thirty-one million, four thousand, two hundred twelve".