211297775503 has 2 divisors, whose sum is σ = 211297775504. Its totient is φ = 211297775502.

The previous prime is 211297775449. The next prime is 211297775509. The reversal of 211297775503 is 305577792112.

211297775503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211297775503 - 2⁹ = 211297774991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211297775509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105648887751 + 105648887752.

It is an arithmetic number, because the mean of its divisors is an integer number (105648887752).

Almost surely, 2^211297775503 is an apocalyptic number.

211297775503 is a deficient number, since it is larger than the sum of its proper divisors (1).

211297775503 is an equidigital number, since it uses as much as digits as its factorization.

211297775503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 926100, while the sum is 49.

The spelling of 211297775503 in words is "two hundred eleven billion, two hundred ninety-seven million, seven hundred seventy-five thousand, five hundred three".