212443105 has 8 divisors (see below), whose sum is σ = 291350592. Its totient is φ = 145675248.

The previous prime is 212443103. The next prime is 212443117. The reversal of 212443105 is 501344212.

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 212443105 - 2¹ = 212443103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212443103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3034867 + ... + 3034936.

It is an arithmetic number, because the mean of its divisors is an integer number (36418824).

Almost surely, 2^212443105 is an apocalyptic number.

It is an amenable number.

212443105 is a deficient number, since it is larger than the sum of its proper divisors (78907487).

212443105 is an equidigital number, since it uses as much as digits as its factorization.

212443105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069815.

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

The square root of 212443105 is about 14575.4281240724. The cubic root of 212443105 is about 596.6883337776.

Adding to 212443105 its reverse (501344212), we get a palindrome (713787317).

The spelling of 212443105 in words is "two hundred twelve million, four hundred forty-three thousand, one hundred five".