20001011003 has 8 divisors (see below), whose sum is σ = 21182906160. Its totient is φ = 18819712000.

The previous prime is 20001010999. The next prime is 20001011021. The reversal of 20001011003 is 30011010002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20001011003 - 2² = 20001010999 is a prime.

It is a super-2 number, since 2×20001011003² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001014003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79013 + ... + 215046.

It is an arithmetic number, because the mean of its divisors is an integer number (2647863270).

Almost surely, 2^20001011003 is an apocalyptic number.

20001011003 is a deficient number, since it is larger than the sum of its proper divisors (1181895157).

20001011003 is a wasteful number, since it uses less digits than its factorization.

20001011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298077.

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

Adding to 20001011003 its reverse (30011010002), we get a palindrome (50012021005).

The spelling of 20001011003 in words is "twenty billion, one million, eleven thousand, three".