1103003220 has 96 divisors (see below), whose sum is σ = 3424530816. Its totient is φ = 263001600.

The previous prime is 1103003179. The next prime is 1103003261. The reversal of 1103003220 is 223003011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1103003179) and next prime (1103003261).

It is a super-2 number, since 2×1103003220² = 2433232206660736800, which contains 22 as substring.

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 = 1103003196 and 1103003205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26562 + ... + 53958.

It is an arithmetic number, because the mean of its divisors is an integer number (35672196).

Almost surely, 2^1103003220 is an apocalyptic number.

1103003220 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 1103003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712265408).

1103003220 is an abundant number, since it is smaller than the sum of its proper divisors (2321527596).

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

1103003220 is a wasteful number, since it uses less digits than its factorization.

1103003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27481 (or 27479 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1103003220 is about 33211.4922880620. The cubic root of 1103003220 is about 1033.2187055181.

Adding to 1103003220 its reverse (223003011), we get a palindrome (1326006231).

The spelling of 1103003220 in words is "one billion, one hundred three million, three thousand, two hundred twenty".