211013223251 has 2 divisors, whose sum is σ = 211013223252. Its totient is φ = 211013223250.

The previous prime is 211013223119. The next prime is 211013223257. The reversal of 211013223251 is 152322310112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211013223251 is a prime.

It is not a weakly prime, because it can be changed into another prime (211013223257) 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, 105506611625 + 105506611626.

It is an arithmetic number, because the mean of its divisors is an integer number (105506611626).

Almost surely, 2^211013223251 is an apocalyptic number.

211013223251 is a deficient number, since it is larger than the sum of its proper divisors (1).

211013223251 is an equidigital number, since it uses as much as digits as its factorization.

211013223251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 211013223251 its reverse (152322310112), we get a palindrome (363335533363).

The spelling of 211013223251 in words is "two hundred eleven billion, thirteen million, two hundred twenty-three thousand, two hundred fifty-one".