212086193 has 8 divisors (see below), whose sum is σ = 239345280. Its totient is φ = 186156880.

The previous prime is 212086187. The next prime is 212086201. The reversal of 212086193 is 391680212.

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 212086193 - 2¹⁸ = 211824049 is a prime.

It is a super-2 number, since 2×212086193² = 89961106522466498, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212086103) by changing a digit.

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, 332105 + ... + 332742.

It is an arithmetic number, because the mean of its divisors is an integer number (29918160).

Almost surely, 2^212086193 is an apocalyptic number.

It is an amenable number.

212086193 is a deficient number, since it is larger than the sum of its proper divisors (27259087).

212086193 is a wasteful number, since it uses less digits than its factorization.

212086193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664887.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 212086193 is about 14563.1793575441. The cubic root of 212086193 is about 596.3539939064.

The spelling of 212086193 in words is "two hundred twelve million, eighty-six thousand, one hundred ninety-three".