11213224445 has 4 divisors (see below), whose sum is σ = 13455869340. Its totient is φ = 8970579552.

The previous prime is 11213224367. The next prime is 11213224447. The reversal of 11213224445 is 54442231211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54442231211 = 827 ⋅65830993.

It can be written as a sum of positive squares in 2 ways, for example, as 4522966009 + 6690258436 = 67253^2 + 81794^2 .

It is a cyclic number.

It is not a de Polignac number, because 11213224445 - 2¹⁰ = 11213223421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213224447) 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, 1121322440 + ... + 1121322449.

It is an arithmetic number, because the mean of its divisors is an integer number (3363967335).

Almost surely, 2^11213224445 is an apocalyptic number.

It is an amenable number.

11213224445 is a deficient number, since it is larger than the sum of its proper divisors (2242644895).

11213224445 is an equidigital number, since it uses as much as digits as its factorization.

11213224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242644894.

The product of its digits is 7680, while the sum is 29.

Adding to 11213224445 its reverse (54442231211), we get a palindrome (65655455656).

The spelling of 11213224445 in words is "eleven billion, two hundred thirteen million, two hundred twenty-four thousand, four hundred forty-five".