212215112 has 16 divisors (see below), whose sum is σ = 415203840. Its totient is φ = 101494096.

The previous prime is 212215111. The next prime is 212215151. The reversal of 212215112 is 211512212.

It is a super-2 number, since 2×212215112² = 90070507522345088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212215111) 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 3 ways as a sum of consecutive naturals, for example, 576488 + ... + 576855.

It is an arithmetic number, because the mean of its divisors is an integer number (25950240).

Almost surely, 2^212215112 is an apocalyptic number.

It is an amenable number.

212215112 is a deficient number, since it is larger than the sum of its proper divisors (202988728).

212215112 is a wasteful number, since it uses less digits than its factorization.

212215112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153372 (or 1153368 counting only the distinct ones).

The product of its digits is 80, while the sum is 17.

The square root of 212215112 is about 14567.6048820662. The cubic root of 212215112 is about 596.4748029463.

Adding to 212215112 its reverse (211512212), we get a palindrome (423727324).

The spelling of 212215112 in words is "two hundred twelve million, two hundred fifteen thousand, one hundred twelve".