1112021203 has 4 divisors (see below), whose sum is σ = 1130869080. Its totient is φ = 1093173328.

The previous prime is 1112021179. The next prime is 1112021213. The reversal of 1112021203 is 3021202111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1112021203 - 2⁵ = 1112021171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112021213) 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 3 ways as a sum of consecutive naturals, for example, 9423850 + ... + 9423967.

It is an arithmetic number, because the mean of its divisors is an integer number (282717270).

Almost surely, 2^1112021203 is an apocalyptic number.

1112021203 is a deficient number, since it is larger than the sum of its proper divisors (18847877).

1112021203 is an equidigital number, since it uses as much as digits as its factorization.

1112021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18847876.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1112021203 is about 33346.9819174090. The cubic root of 1112021203 is about 1036.0268781879.

Adding to 1112021203 its reverse (3021202111), we get a palindrome (4133223314).

It can be divided in two parts, 11120 and 21203, that added together give a palindrome (32323).

The spelling of 1112021203 in words is "one billion, one hundred twelve million, twenty-one thousand, two hundred three".