211212203 has 2 divisors, whose sum is σ = 211212204. Its totient is φ = 211212202.

The previous prime is 211212181. The next prime is 211212241. The reversal of 211212203 is 302212112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211212203 - 2²⁴ = 194434987 is a prime.

It is a super-2 number, since 2×211212203² = 89221189392226418, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (211212263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606101 + 105606102.

It is an arithmetic number, because the mean of its divisors is an integer number (105606102).

Almost surely, 2^211212203 is an apocalyptic number.

211212203 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212203 is an equidigital number, since it uses as much as digits as its factorization.

211212203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211212203 is about 14533.1415392543. The cubic root of 211212203 is about 595.5336905908.

Adding to 211212203 its reverse (302212112), we get a palindrome (513424315).

Subtracting 211212203 from its reverse (302212112), we obtain a palindrome (90999909).

The spelling of 211212203 in words is "two hundred eleven million, two hundred twelve thousand, two hundred three".