212011116 has 24 divisors (see below), whose sum is σ = 495042240. Its totient is φ = 70620432.

The previous prime is 212011087. The next prime is 212011117. The reversal of 212011116 is 611110212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212011095 and 212011104.

It is not an unprimeable number, because it can be changed into a prime (212011117) by changing a digit.

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, 14095 + ... + 24953.

It is an arithmetic number, because the mean of its divisors is an integer number (20626760).

Almost surely, 2^212011116 is an apocalyptic number.

It is an amenable number.

212011116 is an abundant number, since it is smaller than the sum of its proper divisors (283031124).

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

212011116 is a wasteful number, since it uses less digits than its factorization.

212011116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12493 (or 12491 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 212011116 is about 14560.6014985645. The cubic root of 212011116 is about 596.2836172476.

Adding to 212011116 its reverse (611110212), we get a palindrome (823121328).

The spelling of 212011116 in words is "two hundred twelve million, eleven thousand, one hundred sixteen".