212215005 has 32 divisors (see below), whose sum is σ = 378069120. Its totient is φ = 112942080.

The previous prime is 212215001. The next prime is 212215013. The reversal of 212215005 is 500512212.

212215005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212215005 - 2² = 212215001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212215001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75709 + ... + 78461.

It is an arithmetic number, because the mean of its divisors is an integer number (11814660).

Almost surely, 2^212215005 is an apocalyptic number.

It is an amenable number.

212215005 is a deficient number, since it is larger than the sum of its proper divisors (165854115).

212215005 is a wasteful number, since it uses less digits than its factorization.

212215005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 3332 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 212215005 is about 14567.6012095334. The cubic root of 212215005 is about 596.4747026977.

Adding to 212215005 its reverse (500512212), we get a palindrome (712727217).

The spelling of 212215005 in words is "two hundred twelve million, two hundred fifteen thousand, five".