212111212 has 24 divisors (see below), whose sum is σ = 392047040. Its totient is φ = 100135440.

The previous prime is 212111177. The next prime is 212111219.

212111212 is nontrivially palindromic in base 10.

212111212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212111212² = 89982332512217888, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 212111192 and 212111201.

It is not an unprimeable number, because it can be changed into a prime (212111219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18787 + ... + 27877.

Almost surely, 2^212111212 is an apocalyptic number.

It is an amenable number.

212111212 is a deficient number, since it is larger than the sum of its proper divisors (179935828).

212111212 is a wasteful number, since it uses less digits than its factorization.

212111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421 (or 9419 counting only the distinct ones).

The product of its digits is 16, while the sum is 13.

The square root of 212111212 is about 14564.0383135997. The cubic root of 212111212 is about 596.3774428537.

The spelling of 212111212 in words is "two hundred twelve million, one hundred eleven thousand, two hundred twelve".