211112011212 has 48 divisors (see below), whose sum is σ = 493248268800. Its totient is φ = 70277376960.

The previous prime is 211112011153. The next prime is 211112011307. The reversal of 211112011212 is 212110211112.

It is a happy number.

It is a super-2 number, since 2×211112011212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211112011191 and 211112011200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36152589 + ... + 36158427.

It is an arithmetic number, because the mean of its divisors is an integer number (10276005600).

Almost surely, 2^211112011212 is an apocalyptic number.

It is an amenable number.

211112011212 is an abundant number, since it is smaller than the sum of its proper divisors (282136257588).

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

211112011212 is a wasteful number, since it uses less digits than its factorization.

211112011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326 (or 9324 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211112011212 its reverse (212110211112), we get a palindrome (423222222324).

The spelling of 211112011212 in words is "two hundred eleven billion, one hundred twelve million, eleven thousand, two hundred twelve".