212666203 has 2 divisors, whose sum is σ = 212666204. Its totient is φ = 212666202.

The previous prime is 212666197. The next prime is 212666227. The reversal of 212666203 is 302666212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212666203 - 2¹⁷ = 212535131 is a prime.

It is not a weakly prime, because it can be changed into another prime (212666273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106333101 + 106333102.

It is an arithmetic number, because the mean of its divisors is an integer number (106333102).

Almost surely, 2^212666203 is an apocalyptic number.

212666203 is a deficient number, since it is larger than the sum of its proper divisors (1).

212666203 is an equidigital number, since it uses as much as digits as its factorization.

212666203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 212666203 is about 14583.0793387405. The cubic root of 212666203 is about 596.8971322733.

Subtracting 212666203 from its reverse (302666212), we obtain a palindrome (90000009).

The spelling of 212666203 in words is "two hundred twelve million, six hundred sixty-six thousand, two hundred three".