11222031320 has 64 divisors (see below), whose sum is σ = 25860215520. Its totient is φ = 4381138944.

The previous prime is 11222031311. The next prime is 11222031349. The reversal of 11222031320 is 2313022211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395447 + ... + 422873.

Almost surely, 2^11222031320 is an apocalyptic number.

11222031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11222031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12930107760).

11222031320 is an abundant number, since it is smaller than the sum of its proper divisors (14638184200).

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

11222031320 is a wasteful number, since it uses less digits than its factorization.

11222031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27684 (or 27680 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11222031320 its reverse (2313022211), we get a palindrome (13535053531).

The spelling of 11222031320 in words is "eleven billion, two hundred twenty-two million, thirty-one thousand, three hundred twenty".