1111223320 has 16 divisors (see below), whose sum is σ = 2500252560. Its totient is φ = 444489312.

The previous prime is 1111223297. The next prime is 1111223353. The reversal of 1111223320 is 233221111.

It is a junction number, because it is equal to n+sod(n) for n = 1111223294 and 1111223303.

It is a congruent number.

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, 13890252 + ... + 13890331.

It is an arithmetic number, because the mean of its divisors is an integer number (156265785).

Almost surely, 2^1111223320 is an apocalyptic number.

1111223320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111223320 is an abundant number, since it is smaller than the sum of its proper divisors (1389029240).

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

1111223320 is a wasteful number, since it uses less digits than its factorization.

1111223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27780594 (or 27780590 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1111223320 is about 33335.0164241747. The cubic root of 1111223320 is about 1035.7790333884.

Adding to 1111223320 its reverse (233221111), we get a palindrome (1344444431).

The spelling of 1111223320 in words is "one billion, one hundred eleven million, two hundred twenty-three thousand, three hundred twenty".