20011010003 has 4 divisors (see below), whose sum is σ = 20031704880. Its totient is φ = 19990315128.

The previous prime is 20011009987. The next prime is 20011010009. The reversal of 20011010003 is 30001011002.

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 20011010003 - 2⁴ = 20011009987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011010009) 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, 10345988 + ... + 10347921.

It is an arithmetic number, because the mean of its divisors is an integer number (5007926220).

Almost surely, 2^20011010003 is an apocalyptic number.

20011010003 is a deficient number, since it is larger than the sum of its proper divisors (20694877).

20011010003 is an equidigital number, since it uses as much as digits as its factorization.

20011010003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20694876.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 20011010003 its reverse (30001011002), we get a palindrome (50012021005).

Subtracting 20011010003 from its reverse (30001011002), we obtain a palindrome (9990000999).

The spelling of 20011010003 in words is "twenty billion, eleven million, ten thousand, three".