1002011002003 has 4 divisors (see below), whose sum is σ = 1093102911288. Its totient is φ = 910919092720.

The previous prime is 1002011001989. The next prime is 1002011002061. The reversal of 1002011002003 is 3002001102001.

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 1002011002003 - 2¹³ = 1002010993811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002011003003) 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, 45545954626 + ... + 45545954647.

It is an arithmetic number, because the mean of its divisors is an integer number (273275727822).

Almost surely, 2^{1002011002003} is an apocalyptic number.

1002011002003 is a deficient number, since it is larger than the sum of its proper divisors (91091909285).

1002011002003 is an equidigital number, since it uses as much as digits as its factorization.

1002011002003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91091909284.

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

Adding to 1002011002003 its reverse (3002001102001), we get a palindrome (4004012104004).

The spelling of 1002011002003 in words is "one trillion, two billion, eleven million, two thousand, three".