11212211113 has 2 divisors, whose sum is σ = 11212211114. Its totient is φ = 11212211112.

The previous prime is 11212211089. The next prime is 11212211147. The reversal of 11212211113 is 31111221211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6419695129 + 4792515984 = 80123^2 + 69228^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212211113 - 2⁹ = 11212210601 is a prime.

It is not a weakly prime, because it can be changed into another prime (11212211513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606105556 + 5606105557.

It is an arithmetic number, because the mean of its divisors is an integer number (5606105557).

Almost surely, 2^11212211113 is an apocalyptic number.

It is an amenable number.

11212211113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212211113 is an equidigital number, since it uses as much as digits as its factorization.

11212211113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 16.

Adding to 11212211113 its reverse (31111221211), we get a palindrome (42323432324).

The spelling of 11212211113 in words is "eleven billion, two hundred twelve million, two hundred eleven thousand, one hundred thirteen".