2011000000203 has 16 divisors (see below), whose sum is σ = 3154509804960. Its totient is φ = 1261803921408.

The previous prime is 2011000000183. The next prime is 2011000000277. The reversal of 2011000000203 is 3020000001102.

It is a happy number.

It is not a de Polignac number, because 2011000000203 - 2⁸ = 2010999999947 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 (2011000000103) 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, 2190631350 + ... + 2190632267.

It is an arithmetic number, because the mean of its divisors is an integer number (197156862810).

Almost surely, 2^{2011000000203} is an apocalyptic number.

2011000000203 is a deficient number, since it is larger than the sum of its proper divisors (1143509804757).

2011000000203 is a wasteful number, since it uses less digits than its factorization.

2011000000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381263643 (or 4381263637 counting only the distinct ones).

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

Adding to 2011000000203 its reverse (3020000001102), we get a palindrome (5031000001305).

The spelling of 2011000000203 in words is "two trillion, eleven billion, two hundred three", and thus it is an aban number.