212342215 has 8 divisors (see below), whose sum is σ = 257438160. Its totient is φ = 168122112.

The previous prime is 212342209. The next prime is 212342237. The reversal of 212342215 is 512243212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212342215 - 2¹⁹ = 211817927 is a prime.

It is a super-2 number, since 2×212342215² = 90178432542212450, which contains 22 as substring.

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, 218425 + ... + 219394.

It is an arithmetic number, because the mean of its divisors is an integer number (32179770).

Almost surely, 2^212342215 is an apocalyptic number.

212342215 is a deficient number, since it is larger than the sum of its proper divisors (45095945).

212342215 is an equidigital number, since it uses as much as digits as its factorization.

212342215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437921.

The product of its digits is 960, while the sum is 22.

The square root of 212342215 is about 14571.9667512659. The cubic root of 212342215 is about 596.5938623374.

Adding to 212342215 its reverse (512243212), we get a palindrome (724585427).

The spelling of 212342215 in words is "two hundred twelve million, three hundred forty-two thousand, two hundred fifteen".