1103231032220 has 12 divisors (see below), whose sum is σ = 2316785167704. Its totient is φ = 441292412880.

The previous prime is 1103231032217. The next prime is 1103231032229. The reversal of 1103231032220 is 222301323011.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 55161551611 = 1103231032220 / (1 + 1 + 0 + 3 + 2 + 3 + 1 + 0 + 3 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1103231032192 and 1103231032201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103231032229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27580775786 + ... + 27580775825.

It is an arithmetic number, because the mean of its divisors is an integer number (193065430642).

Almost surely, 2^{1103231032220} is an apocalyptic number.

1103231032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103231032220 is an abundant number, since it is smaller than the sum of its proper divisors (1213554135484).

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

1103231032220 is a wasteful number, since it uses less digits than its factorization.

1103231032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55161551620 (or 55161551618 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1103231032220 its reverse (222301323011), we get a palindrome (1325532355231).

The spelling of 1103231032220 in words is "one trillion, one hundred three billion, two hundred thirty-one million, thirty-two thousand, two hundred twenty".