212212116 has 24 divisors (see below), whose sum is σ = 550179840. Its totient is φ = 70737336.

The previous prime is 212212093. The next prime is 212212123. The reversal of 212212116 is 611212212.

212212116 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982356 + ... + 982571.

It is an arithmetic number, because the mean of its divisors is an integer number (22924160).

Almost surely, 2^212212116 is an apocalyptic number.

It is an amenable number.

212212116 is an abundant number, since it is smaller than the sum of its proper divisors (337967724).

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

212212116 is a wasteful number, since it uses less digits than its factorization.

212212116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964940 (or 1964932 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 212212116 is about 14567.5020507979. The cubic root of 212212116 is about 596.4719959723.

Adding to 212212116 its product of digits (96), we get a palindrome (212212212).

Adding to 212212116 its reverse (611212212), we get a palindrome (823424328).

The spelling of 212212116 in words is "two hundred twelve million, two hundred twelve thousand, one hundred sixteen".