11213444023 has 4 divisors (see below), whose sum is σ = 11213660248. Its totient is φ = 11213227800.

The previous prime is 11213444009. The next prime is 11213444029. The reversal of 11213444023 is 32044431211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11213444023 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 (11213444029) 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, 21373 + ... + 151273.

It is an arithmetic number, because the mean of its divisors is an integer number (2803415062).

Almost surely, 2^11213444023 is an apocalyptic number.

11213444023 is a deficient number, since it is larger than the sum of its proper divisors (216225).

11213444023 is an equidigital number, since it uses as much as digits as its factorization.

11213444023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216224.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 11213444023 its reverse (32044431211), we get a palindrome (43257875234).

The spelling of 11213444023 in words is "eleven billion, two hundred thirteen million, four hundred forty-four thousand, twenty-three".