1113222320 has 80 divisors (see below), whose sum is σ = 2963048448. Its totient is φ = 381024000.

The previous prime is 1113222317. The next prime is 1113222347. The reversal of 1113222320 is 232223111.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419237 + ... + 421883.

Almost surely, 2^1113222320 is an apocalyptic number.

1113222320 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 1113222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481524224).

1113222320 is an abundant number, since it is smaller than the sum of its proper divisors (1849826128).

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

1113222320 is a wasteful number, since it uses less digits than its factorization.

1113222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418 (or 3412 counting only the distinct ones).

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

The square root of 1113222320 is about 33364.9864378813. The cubic root of 1113222320 is about 1036.3997552910.

Adding to 1113222320 its reverse (232223111), we get a palindrome (1345445431).

The spelling of 1113222320 in words is "one billion, one hundred thirteen million, two hundred twenty-two thousand, three hundred twenty".