211112210251 has 2 divisors, whose sum is σ = 211112210252. Its totient is φ = 211112210250.

The previous prime is 211112210233. The next prime is 211112210263. The reversal of 211112210251 is 152012211112.

211112210251 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 211112210251 - 2⁷ = 211112210123 is a prime.

It is not a weakly prime, because it can be changed into another prime (211112210291) 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, 105556105125 + 105556105126.

It is an arithmetic number, because the mean of its divisors is an integer number (105556105126).

Almost surely, 2^211112210251 is an apocalyptic number.

211112210251 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112210251 is an equidigital number, since it uses as much as digits as its factorization.

211112210251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 211112210251 its reverse (152012211112), we get a palindrome (363124421363).

The spelling of 211112210251 in words is "two hundred eleven billion, one hundred twelve million, two hundred ten thousand, two hundred fifty-one".