11227747249 has 4 divisors (see below), whose sum is σ = 11227987300. Its totient is φ = 11227507200.

The previous prime is 11227747241. The next prime is 11227747303. The reversal of 11227747249 is 94274772211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8130268224 + 3097479025 = 90168^2 + 55655^2 .

It is a cyclic number.

It is not a de Polignac number, because 11227747249 - 2³ = 11227747241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11227747199 and 11227747208.

It is not an unprimeable number, because it can be changed into a prime (11227747241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24552 + ... + 151849.

It is an arithmetic number, because the mean of its divisors is an integer number (2806996825).

Almost surely, 2^11227747249 is an apocalyptic number.

It is an amenable number.

11227747249 is a deficient number, since it is larger than the sum of its proper divisors (240051).

11227747249 is an equidigital number, since it uses as much as digits as its factorization.

11227747249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240050.

The product of its digits is 395136, while the sum is 46.

The spelling of 11227747249 in words is "eleven billion, two hundred twenty-seven million, seven hundred forty-seven thousand, two hundred forty-nine".