11223215430 has 128 divisors (see below), whose sum is σ = 31712034816. Its totient is φ = 2488752000.

The previous prime is 11223215407. The next prime is 11223215453. The reversal of 11223215430 is 3451232211.

It is an interprime number because it is at equal distance from previous prime (11223215407) and next prime (11223215453).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11223215430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1359415 + ... + 1367645.

It is an arithmetic number, because the mean of its divisors is an integer number (247750272).

Almost surely, 2^11223215430 is an apocalyptic number.

11223215430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11223215430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15856017408).

11223215430 is an abundant number, since it is smaller than the sum of its proper divisors (20488819386).

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

11223215430 is a wasteful number, since it uses less digits than its factorization.

11223215430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 11223215430 its reverse (3451232211), we get a palindrome (14674447641).

The spelling of 11223215430 in words is "eleven billion, two hundred twenty-three million, two hundred fifteen thousand, four hundred thirty".