1103144220 has 72 divisors (see below), whose sum is σ = 3379390560. Its totient is φ = 291254400.

The previous prime is 1103144219. The next prime is 1103144221. The reversal of 1103144220 is 224413011.

It is an interprime number because it is at equal distance from previous prime (1103144219) and next prime (1103144221).

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 = 1103144193 and 1103144202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103144221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12160 + ... + 48519.

It is an arithmetic number, because the mean of its divisors is an integer number (46935980).

Almost surely, 2^1103144220 is an apocalyptic number.

1103144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103144220 is an abundant number, since it is smaller than the sum of its proper divisors (2276246340).

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

1103144220 is a wasteful number, since it uses less digits than its factorization.

1103144220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60795 (or 60790 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1103144220 is about 33213.6149794026. The cubic root of 1103144220 is about 1033.2627300587.

Adding to 1103144220 its reverse (224413011), we get a palindrome (1327557231).

The spelling of 1103144220 in words is "one billion, one hundred three million, one hundred forty-four thousand, two hundred twenty".