1201013001003 has 4 divisors (see below), whose sum is σ = 1601350668008. Its totient is φ = 800675334000.

The previous prime is 1201013000983. The next prime is 1201013001017. The reversal of 1201013001003 is 3001003101021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1201013001003 - 2¹³ = 1201012992811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201013001003.

It is not an unprimeable number, because it can be changed into a prime (1201013001803) 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, 200168833498 + ... + 200168833503.

It is an arithmetic number, because the mean of its divisors is an integer number (400337667002).

Almost surely, 2^{1201013001003} is an apocalyptic number.

1201013001003 is a deficient number, since it is larger than the sum of its proper divisors (400337667005).

1201013001003 is an equidigital number, since it uses as much as digits as its factorization.

1201013001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400337667004.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 1201013001003 its reverse (3001003101021), we get a palindrome (4202016102024).

The spelling of 1201013001003 in words is "one trillion, two hundred one billion, thirteen million, one thousand, three".