11221223424 has 48 divisors (see below), whose sum is σ = 29915973360. Its totient is φ = 3740405760.

The previous prime is 11221223407. The next prime is 11221223443. The reversal of 11221223424 is 42432212211.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11221223394 and 11221223403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907042 + ... + 919329.

It is an arithmetic number, because the mean of its divisors is an integer number (623249445).

Almost surely, 2^11221223424 is an apocalyptic number.

It is an amenable number.

11221223424 is an abundant number, since it is smaller than the sum of its proper divisors (18694749936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221223424 is an equidigital number, since it uses as much as digits as its factorization.

11221223424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826396 (or 1826376 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 11221223424 its reverse (42432212211), we get a palindrome (53653435635).

The spelling of 11221223424 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-three thousand, four hundred twenty-four".