212771215 has 16 divisors (see below), whose sum is σ = 269313120. Its totient is φ = 160928640.

The previous prime is 212771189. The next prime is 212771219. The reversal of 212771215 is 512177212.

It is not a de Polignac number, because 212771215 - 2⁷ = 212771087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212771219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50905 + ... + 54925.

It is an arithmetic number, because the mean of its divisors is an integer number (16832070).

Almost surely, 2^212771215 is an apocalyptic number.

212771215 is a deficient number, since it is larger than the sum of its proper divisors (56541905).

212771215 is a wasteful number, since it uses less digits than its factorization.

212771215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602.

The product of its digits is 1960, while the sum is 28.

The square root of 212771215 is about 14586.6793685198. The cubic root of 212771215 is about 596.9953629692.

The spelling of 212771215 in words is "two hundred twelve million, seven hundred seventy-one thousand, two hundred fifteen".