211303223251 has 2 divisors, whose sum is σ = 211303223252. Its totient is φ = 211303223250.

The previous prime is 211303223227. The next prime is 211303223281. The reversal of 211303223251 is 152322303112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211303223251 - 2⁷ = 211303223123 is a prime.

It is not a weakly prime, because it can be changed into another prime (211303223281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105651611625 + 105651611626.

It is an arithmetic number, because the mean of its divisors is an integer number (105651611626).

Almost surely, 2^211303223251 is an apocalyptic number.

211303223251 is a deficient number, since it is larger than the sum of its proper divisors (1).

211303223251 is an equidigital number, since it uses as much as digits as its factorization.

211303223251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 211303223251 its reverse (152322303112), we get a palindrome (363625526363).

The spelling of 211303223251 in words is "two hundred eleven billion, three hundred three million, two hundred twenty-three thousand, two hundred fifty-one".