1103211220 has 24 divisors (see below), whose sum is σ = 2317447944. Its totient is φ = 441150336.

The previous prime is 1103211173. The next prime is 1103211223. The reversal of 1103211220 is 221123011.

1103211220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 199487376 + 903723844 = 14124^2 + 30062^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1103211220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103211223) 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 7 ways as a sum of consecutive naturals, for example, 83722 + ... + 95998.

It is an arithmetic number, because the mean of its divisors is an integer number (96560331).

Almost surely, 2^1103211220 is an apocalyptic number.

1103211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103211220 is an abundant number, since it is smaller than the sum of its proper divisors (1214236724).

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

1103211220 is a wasteful number, since it uses less digits than its factorization.

1103211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16779 (or 16777 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1103211220 is about 33214.6235866071. The cubic root of 1103211220 is about 1033.2836482065.

Adding to 1103211220 its reverse (221123011), we get a palindrome (1324334231).

The spelling of 1103211220 in words is "one billion, one hundred three million, two hundred eleven thousand, two hundred twenty".