1101100203 has 32 divisors (see below), whose sum is σ = 1894878720. Its totient is φ = 618878880.

The previous prime is 1101100201. The next prime is 1101100213. The reversal of 1101100203 is 3020011011.

It is not a de Polignac number, because 1101100203 - 2¹ = 1101100201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1101100201) 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, 36225 + ... + 59282.

It is an arithmetic number, because the mean of its divisors is an integer number (59214960).

Almost surely, 2^1101100203 is an apocalyptic number.

1101100203 is a deficient number, since it is larger than the sum of its proper divisors (793778517).

1101100203 is an equidigital number, since it uses as much as digits as its factorization.

1101100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95584 (or 95578 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1101100203 is about 33182.8299426074. The cubic root of 1101100203 is about 1032.6241576526.

Adding to 1101100203 its reverse (3020011011), we get a palindrome (4121111214).

The spelling of 1101100203 in words is "one billion, one hundred one million, one hundred thousand, two hundred three".