1200010011003 has 6 divisors (see below), whose sum is σ = 1733347793684. Its totient is φ = 800006673996.

The previous prime is 1200010011001. The next prime is 1200010011023. The reversal of 1200010011003 is 3001100100021.

It is not a de Polignac number, because 1200010011003 - 2¹ = 1200010011001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 133334445667 = 1200010011003 / (1 + 2 + 0 + 0 + 0 + 1 + 0 + 0 + 1 + 1 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200010011001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66667222825 + ... + 66667222842.

Almost surely, 2^{1200010011003} is an apocalyptic number.

1200010011003 is a deficient number, since it is larger than the sum of its proper divisors (533337782681).

1200010011003 is a wasteful number, since it uses less digits than its factorization.

1200010011003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133334445673 (or 133334445670 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 1200010011003 its reverse (3001100100021), we get a palindrome (4201110111024).

The spelling of 1200010011003 in words is "one trillion, two hundred billion, ten million, eleven thousand, three".