2011011203 has 4 divisors (see below), whose sum is σ = 2011101048. Its totient is φ = 2010921360.

The previous prime is 2011011169. The next prime is 2011011221. The reversal of 2011011203 is 3021101102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2011011203 - 2¹⁴ = 2010994819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011011403) 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, 18500 + ... + 66062.

It is an arithmetic number, because the mean of its divisors is an integer number (502775262).

Almost surely, 2^2011011203 is an apocalyptic number.

2011011203 is a deficient number, since it is larger than the sum of its proper divisors (89845).

2011011203 is an equidigital number, since it uses as much as digits as its factorization.

2011011203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89844.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2011011203 is about 44844.2995596988. The cubic root of 2011011203 is about 1262.2290272024.

Adding to 2011011203 its reverse (3021101102), we get a palindrome (5032112305).

It can be divided in two parts, 20110 and 11203, that added together give a palindrome (31313).

The spelling of 2011011203 in words is "two billion, eleven million, eleven thousand, two hundred three".