2001002011003 has 2 divisors, whose sum is σ = 2001002011004. Its totient is φ = 2001002011002.

The previous prime is 2001002010979. The next prime is 2001002011037. The reversal of 2001002011003 is 3001102001002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001002011003 - 2⁵ = 2001002010971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001002011103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000501005501 + 1000501005502.

It is an arithmetic number, because the mean of its divisors is an integer number (1000501005502).

Almost surely, 2^{2001002011003} is an apocalyptic number.

2001002011003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001002011003 is an equidigital number, since it uses as much as digits as its factorization.

2001002011003 is an evil number, because the sum of its binary digits is even.

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

Adding to 2001002011003 its reverse (3001102001002), we get a palindrome (5002104012005).

The spelling of 2001002011003 in words is "two trillion, one billion, two million, eleven thousand, three".