212999 has 2 divisors, whose sum is σ = 213000. Its totient is φ = 212998.
The previous prime is 212987. The next prime is 213019. The reversal of 212999 is 999212.
212999 is nontrivially palindromic in base 4.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-212999 is a prime.
It is a Chen prime.
212999 is a modest number, since divided by 999 gives 212 as remainder.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (212909) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106499 + 106500.
It is an arithmetic number, because the mean of its divisors is an integer number (106500).
2212999 is an apocalyptic number.
212999 is a deficient number, since it is larger than the sum of its proper divisors (1).
212999 is an equidigital number, since it uses as much as digits as its factorization.
212999 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2916, while the sum is 32.
The square root of 212999 is about 461.5181469888. The cubic root of 212999 is about 59.7208327381.
The spelling of 212999 in words is "two hundred twelve thousand, nine hundred ninety-nine".
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