211984255123 has 2 divisors, whose sum is σ = 211984255124. Its totient is φ = 211984255122.

The previous prime is 211984255033. The next prime is 211984255177. The reversal of 211984255123 is 321552489112.

211984255123 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 a de Polignac number, because none of the positive numbers 2^k-211984255123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211984255123.

It is not a weakly prime, because it can be changed into another prime (211984255423) 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, 105992127561 + 105992127562.

It is an arithmetic number, because the mean of its divisors is an integer number (105992127562).

Almost surely, 2^211984255123 is an apocalyptic number.

211984255123 is a deficient number, since it is larger than the sum of its proper divisors (1).

211984255123 is an equidigital number, since it uses as much as digits as its factorization.

211984255123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 43.

The spelling of 211984255123 in words is "two hundred eleven billion, nine hundred eighty-four million, two hundred fifty-five thousand, one hundred twenty-three".