1012001020003 has 16 divisors (see below), whose sum is σ = 1054244154816. Its totient is φ = 970548324480.

The previous prime is 1012001019923. The next prime is 1012001020021. The reversal of 1012001020003 is 3000201002101.

It is a cyclic number.

It is not a de Polignac number, because 1012001020003 - 2²⁵ = 1011967465571 is a prime.

It is a super-2 number, since 2×1012001020003² (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 (1012001020703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11443825 + ... + 11531917.

It is an arithmetic number, because the mean of its divisors is an integer number (65890259676).

Almost surely, 2^{1012001020003} is an apocalyptic number.

1012001020003 is a deficient number, since it is larger than the sum of its proper divisors (42243134813).

1012001020003 is an equidigital number, since it uses as much as digits as its factorization.

1012001020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92574.

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

Adding to 1012001020003 its reverse (3000201002101), we get a palindrome (4012202022104).

The spelling of 1012001020003 in words is "one trillion, twelve billion, one million, twenty thousand, three".