212699 has 4 divisors (see below), whose sum is σ = 213864. Its totient is φ = 211536.

The previous prime is 212683. The next prime is 212701. The reversal of 212699 is 996212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212699 - 2⁴ = 212683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212669) 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 3 ways as a sum of consecutive naturals, for example, 242 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (53466).

2²¹²⁶⁹⁹ is an apocalyptic number.

212699 is a deficient number, since it is larger than the sum of its proper divisors (1165).

212699 is an equidigital number, since it uses as much as digits as its factorization.

212699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164.

The product of its digits is 1944, while the sum is 29.

The square root of 212699 is about 461.1930181605. The cubic root of 212699 is about 59.6927814831.

The spelling of 212699 in words is "two hundred twelve thousand, six hundred ninety-nine".