212111108 has 24 divisors (see below), whose sum is σ = 428760864. Its totient is φ = 90742400.

The previous prime is 212111101. The next prime is 212111111. The reversal of 212111108 is 801111212.

212111108 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 2×212111108² = 89982244273975328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (212111101) 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, 141038 + ... + 142533.

It is an arithmetic number, because the mean of its divisors is an integer number (17865036).

Almost surely, 2^212111108 is an apocalyptic number.

It is an amenable number.

212111108 is an abundant number, since it is smaller than the sum of its proper divisors (216649756).

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

212111108 is a wasteful number, since it uses less digits than its factorization.

212111108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283603 (or 283601 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 212111108 is about 14564.0347431610. The cubic root of 212111108 is about 596.3773453840.

The spelling of 212111108 in words is "two hundred twelve million, one hundred eleven thousand, one hundred eight".