213123321227 has 2 divisors, whose sum is σ = 213123321228. Its totient is φ = 213123321226.

The previous prime is 213123321127. The next prime is 213123321239. The reversal of 213123321227 is 722123321312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213123321227 - 2³² = 208828353931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213123321227.

It is not a weakly prime, because it can be changed into another prime (213123321127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561660613 + 106561660614.

It is an arithmetic number, because the mean of its divisors is an integer number (106561660614).

Almost surely, 2^213123321227 is an apocalyptic number.

213123321227 is a deficient number, since it is larger than the sum of its proper divisors (1).

213123321227 is an equidigital number, since it uses as much as digits as its factorization.

213123321227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

Adding to 213123321227 its reverse (722123321312), we get a palindrome (935246642539).

The spelling of 213123321227 in words is "two hundred thirteen billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twenty-seven".