2011020103 has 4 divisors (see below), whose sum is σ = 2011397440. Its totient is φ = 2010642768.

The previous prime is 2011020061. The next prime is 2011020113. The reversal of 2011020103 is 3010201102.

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 2011020103 - 2²⁹ = 1474149191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020113) 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, 180558 + ... + 191371.

It is an arithmetic number, because the mean of its divisors is an integer number (502849360).

Almost surely, 2^2011020103 is an apocalyptic number.

2011020103 is a deficient number, since it is larger than the sum of its proper divisors (377337).

2011020103 is an equidigital number, since it uses as much as digits as its factorization.

2011020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377336.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2011020103 is about 44844.3987918224. The cubic root of 2011020103 is about 1262.2308892543.

Adding to 2011020103 its reverse (3010201102), we get a palindrome (5021221205).

The spelling of 2011020103 in words is "two billion, eleven million, twenty thousand, one hundred three".