211111011203 has 2 divisors, whose sum is σ = 211111011204. Its totient is φ = 211111011202.

The previous prime is 211111011119. The next prime is 211111011211. The reversal of 211111011203 is 302110111112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211111011203 is a prime.

It is not a weakly prime, because it can be changed into another prime (211111011233) 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, 105555505601 + 105555505602.

It is an arithmetic number, because the mean of its divisors is an integer number (105555505602).

Almost surely, 2^211111011203 is an apocalyptic number.

211111011203 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111011203 is an equidigital number, since it uses as much as digits as its factorization.

211111011203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 211111011203 its reverse (302110111112), we get a palindrome (513221122315).

Subtracting 211111011203 from its reverse (302110111112), we obtain a palindrome (90999099909).

The spelling of 211111011203 in words is "two hundred eleven billion, one hundred eleven million, eleven thousand, two hundred three".