11111112224447 has 4 divisors (see below), whose sum is σ = 11494254025320. Its totient is φ = 10727970423576.

The previous prime is 11111112224441. The next prime is 11111112224477. The reversal of 11111112224447 is 74442221111111.

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

It is a cyclic number.

It is not a de Polignac number, because 11111112224447 - 2²⁸ = 11110843788991 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111112224441) 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, 191570900393 + ... + 191570900450.

It is an arithmetic number, because the mean of its divisors is an integer number (2873563506330).

Almost surely, 2^{11111112224447} is an apocalyptic number.

11111112224447 is a deficient number, since it is larger than the sum of its proper divisors (383141800873).

11111112224447 is an equidigital number, since it uses as much as digits as its factorization.

11111112224447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383141800872.

The product of its digits is 3584, while the sum is 32.

Adding to 11111112224447 its reverse (74442221111111), we get a palindrome (85553333335558).

The spelling of 11111112224447 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty-four thousand, four hundred forty-seven".