11166422213 has 4 divisors (see below), whose sum is σ = 11228804640. Its totient is φ = 11104039788.

The previous prime is 11166422207. The next prime is 11166422231. The reversal of 11166422213 is 31222466111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11166422213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166422203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31190945 + ... + 31191302.

It is an arithmetic number, because the mean of its divisors is an integer number (2807201160).

Almost surely, 2^11166422213 is an apocalyptic number.

It is an amenable number.

11166422213 is a deficient number, since it is larger than the sum of its proper divisors (62382427).

11166422213 is an equidigital number, since it uses as much as digits as its factorization.

11166422213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62382426.

The product of its digits is 3456, while the sum is 29.

Adding to 11166422213 its reverse (31222466111), we get a palindrome (42388888324).

The spelling of 11166422213 in words is "eleven billion, one hundred sixty-six million, four hundred twenty-two thousand, two hundred thirteen".