212011212 has 24 divisors (see below), whose sum is σ = 565363456. Its totient is φ = 60574608.

The previous prime is 212011207. The next prime is 212011223. The reversal of 212011212 is 212110212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261888 + ... + 1262055.

Almost surely, 2^212011212 is an apocalyptic number.

It is an amenable number.

212011212 is an abundant number, since it is smaller than the sum of its proper divisors (353352244).

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

212011212 is a wasteful number, since it uses less digits than its factorization.

212011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523957 (or 2523955 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 212011212 is about 14560.6047951313. The cubic root of 212011212 is about 596.2837072480.

Adding to 212011212 its reverse (212110212), we get a palindrome (424121424).

The spelling of 212011212 in words is "two hundred twelve million, eleven thousand, two hundred twelve".