213111123263 has 2 divisors, whose sum is σ = 213111123264. Its totient is φ = 213111123262.

The previous prime is 213111123227. The next prime is 213111123317. The reversal of 213111123263 is 362321111312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213111123263 - 2³⁶ = 144391646527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213111023263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555561631 + 106555561632.

It is an arithmetic number, because the mean of its divisors is an integer number (106555561632).

Almost surely, 2^213111123263 is an apocalyptic number.

213111123263 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111123263 is an equidigital number, since it uses as much as digits as its factorization.

213111123263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

Adding to 213111123263 its reverse (362321111312), we get a palindrome (575432234575).

The spelling of 213111123263 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twenty-three thousand, two hundred sixty-three".