1100020203 has 16 divisors (see below), whose sum is σ = 1630736800. Its totient is φ = 732862080.

The previous prime is 1100020177. The next prime is 1100020211. The reversal of 1100020203 is 3020200011.

It is a happy number.

1100020203 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1100020203 - 2¹² = 1100016107 is a prime.

It is a super-2 number, since 2×1100020203² = 2420088894016322418, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100021203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30783 + ... + 56103.

It is an arithmetic number, because the mean of its divisors is an integer number (101921050).

Almost surely, 2^1100020203 is an apocalyptic number.

1100020203 is a deficient number, since it is larger than the sum of its proper divisors (530716597).

1100020203 is a wasteful number, since it uses less digits than its factorization.

1100020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26939 (or 26933 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1100020203 is about 33166.5524738403. The cubic root of 1100020203 is about 1032.2864351617.

Adding to 1100020203 its reverse (3020200011), we get a palindrome (4120220214).

The spelling of 1100020203 in words is "one billion, one hundred million, twenty thousand, two hundred three".