1100223120 has 160 divisors (see below), whose sum is σ = 3687799680. Its totient is φ = 270397440.

The previous prime is 1100223107. The next prime is 1100223121. The reversal of 1100223120 is 213220011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1100223096 and 1100223105.

It is not an unprimeable number, because it can be changed into a prime (1100223121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165460 + ... + 171980.

It is an arithmetic number, because the mean of its divisors is an integer number (23048748).

Almost surely, 2^1100223120 is an apocalyptic number.

1100223120 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 1100223120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843899840).

1100223120 is an abundant number, since it is smaller than the sum of its proper divisors (2587576560).

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

1100223120 is a wasteful number, since it uses less digits than its factorization.

1100223120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6587 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1100223120 is about 33169.6113935632. The cubic root of 1100223120 is about 1032.3499053862.

Adding to 1100223120 its reverse (213220011), we get a palindrome (1313443131).

The spelling of 1100223120 in words is "one billion, one hundred million, two hundred twenty-three thousand, one hundred twenty".