215422214 has 16 divisors (see below), whose sum is σ = 379277088. Its totient is φ = 89828352.

The previous prime is 215422201. The next prime is 215422223. The reversal of 215422214 is 412224512.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215422214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207419 + ... + 208454.

It is an arithmetic number, because the mean of its divisors is an integer number (23704818).

Almost surely, 2^215422214 is an apocalyptic number.

215422214 is a deficient number, since it is larger than the sum of its proper divisors (163854874).

215422214 is a wasteful number, since it uses less digits than its factorization.

215422214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415919.

The product of its digits is 1280, while the sum is 23.

The square root of 215422214 is about 14677.2686151068. The cubic root of 215422214 is about 599.4645352343.

Adding to 215422214 its reverse (412224512), we get a palindrome (627646726).

The spelling of 215422214 in words is "two hundred fifteen million, four hundred twenty-two thousand, two hundred fourteen".