212130220212 has 72 divisors (see below), whose sum is σ = 541079194656. Its totient is φ = 70071718464.

The previous prime is 212130220207. The next prime is 212130220213. The reversal of 212130220212 is 212022031212.

212130220212 is a `hidden beast` number, since 21 + 213 + 0 + 220 + 212 = 666.

212130220212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212130220212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212130220213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1856523 + ... + 1967469.

Almost surely, 2^212130220212 is an apocalyptic number.

It is an amenable number.

212130220212 is an abundant number, since it is smaller than the sum of its proper divisors (328948974444).

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

212130220212 is a wasteful number, since it uses less digits than its factorization.

212130220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111437 (or 111432 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212130220212 its reverse (212022031212), we get a palindrome (424152251424).

The spelling of 212130220212 in words is "two hundred twelve billion, one hundred thirty million, two hundred twenty thousand, two hundred twelve".