1001201002003 has 4 divisors (see below), whose sum is σ = 1001235750160. Its totient is φ = 1001166253848.

The previous prime is 1001201001989. The next prime is 1001201002049. The reversal of 1001201002003 is 3002001021001.

1001201002003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1001201002003 - 2⁹ = 1001201001491 is a prime.

It is a super-2 number, since 2×1001201002003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001201002603) 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, 17330823 + ... + 17388496.

It is an arithmetic number, because the mean of its divisors is an integer number (250308937540).

Almost surely, 2^{1001201002003} is an apocalyptic number.

1001201002003 is a deficient number, since it is larger than the sum of its proper divisors (34748157).

1001201002003 is an equidigital number, since it uses as much as digits as its factorization.

1001201002003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34748156.

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

Adding to 1001201002003 its reverse (3002001021001), we get a palindrome (4003202023004).

The spelling of 1001201002003 in words is "one trillion, one billion, two hundred one million, two thousand, three".