213322121611 has 2 divisors, whose sum is σ = 213322121612. Its totient is φ = 213322121610.

The previous prime is 213322121603. The next prime is 213322121633. The reversal of 213322121611 is 116121223312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213322121611 - 2³ = 213322121603 is a prime.

It is not a weakly prime, because it can be changed into another prime (213322121671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106661060805 + 106661060806.

It is an arithmetic number, because the mean of its divisors is an integer number (106661060806).

Almost surely, 2^213322121611 is an apocalyptic number.

213322121611 is a deficient number, since it is larger than the sum of its proper divisors (1).

213322121611 is an equidigital number, since it uses as much as digits as its factorization.

213322121611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

Adding to 213322121611 its reverse (116121223312), we get a palindrome (329443344923).

The spelling of 213322121611 in words is "two hundred thirteen billion, three hundred twenty-two million, one hundred twenty-one thousand, six hundred eleven".