11213105647 has 4 divisors (see below), whose sum is σ = 11231279856. Its totient is φ = 11194931440.

The previous prime is 11213105627. The next prime is 11213105653. The reversal of 11213105647 is 74650131211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74650131211 = 237737 ⋅314003.

It is a cyclic number.

It is not a de Polignac number, because 11213105647 - 2²³ = 11204717039 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 (11213105627) 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, 9086179 + ... + 9087412.

It is an arithmetic number, because the mean of its divisors is an integer number (2807819964).

Almost surely, 2^11213105647 is an apocalyptic number.

11213105647 is a deficient number, since it is larger than the sum of its proper divisors (18174209).

11213105647 is an equidigital number, since it uses as much as digits as its factorization.

11213105647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18174208.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 11213105647 its reverse (74650131211), we get a palindrome (85863236858).

The spelling of 11213105647 in words is "eleven billion, two hundred thirteen million, one hundred five thousand, six hundred forty-seven".