212091203 has 2 divisors, whose sum is σ = 212091204. Its totient is φ = 212091202.

The previous prime is 212091161. The next prime is 212091233. The reversal of 212091203 is 302190212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212091203 - 2¹² = 212087107 is a prime.

It is not a weakly prime, because it can be changed into another prime (212091233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106045601 + 106045602.

It is an arithmetic number, because the mean of its divisors is an integer number (106045602).

Almost surely, 2^212091203 is an apocalyptic number.

212091203 is a deficient number, since it is larger than the sum of its proper divisors (1).

212091203 is an equidigital number, since it uses as much as digits as its factorization.

212091203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 212091203 is about 14563.3513656713. The cubic root of 212091203 is about 596.3586896544.

Subtracting 212091203 from its reverse (302190212), we obtain a palindrome (90099009).

The spelling of 212091203 in words is "two hundred twelve million, ninety-one thousand, two hundred three".