212189683 has 4 divisors (see below), whose sum is σ = 212222808. Its totient is φ = 212156560.

The previous prime is 212189671. The next prime is 212189689. The reversal of 212189683 is 386981212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212189683 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212189689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3541 + ... + 20902.

It is an arithmetic number, because the mean of its divisors is an integer number (53055702).

Almost surely, 2^212189683 is an apocalyptic number.

212189683 is a deficient number, since it is larger than the sum of its proper divisors (33125).

212189683 is an equidigital number, since it uses as much as digits as its factorization.

212189683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33124.

The product of its digits is 41472, while the sum is 40.

The square root of 212189683 is about 14566.7320631637. The cubic root of 212189683 is about 596.4509774931.

The spelling of 212189683 in words is "two hundred twelve million, one hundred eighty-nine thousand, six hundred eighty-three".