1113233220 has 240 divisors, whose sum is σ = 3841992000. Its totient is φ = 267598080.

The previous prime is 1113233213. The next prime is 1113233221. The reversal of 1113233220 is 223323111.

It is a super-2 number, since 2×1113233220² = 2478576404223136800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1113233193 and 1113233202.

It is not an unprimeable number, because it can be changed into a prime (1113233221) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 3189606 + ... + 3189954.

It is an arithmetic number, because the mean of its divisors is an integer number (16008300).

Almost surely, 2^1113233220 is an apocalyptic number.

1113233220 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 1113233220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920996000).

1113233220 is an abundant number, since it is smaller than the sum of its proper divisors (2728758780).

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

1113233220 is a wasteful number, since it uses less digits than its factorization.

1113233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1113233220 is about 33365.1497823702. The cubic root of 1113233220 is about 1036.4031378799.

Adding to 1113233220 its reverse (223323111), we get a palindrome (1336556331).

It can be divided in two parts, 11 and 13233220, that added together give a palindrome (13233231).

The spelling of 1113233220 in words is "one billion, one hundred thirteen million, two hundred thirty-three thousand, two hundred twenty".