2001120012003 has 16 divisors (see below), whose sum is σ = 3049345769216. Its totient is φ = 1143489636000.

The previous prime is 2001120011983. The next prime is 2001120012007. The reversal of 2001120012003 is 3002100211002.

It is not a de Polignac number, because 2001120012003 - 2¹² = 2001120007907 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 2001120012003.

It is not an unprimeable number, because it can be changed into a prime (2001120012007) 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, 5296128 + ... + 5661378.

It is an arithmetic number, because the mean of its divisors is an integer number (190584110576).

Almost surely, 2^{2001120012003} is an apocalyptic number.

2001120012003 is a deficient number, since it is larger than the sum of its proper divisors (1048225757213).

2001120012003 is a wasteful number, since it uses less digits than its factorization.

2001120012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626154.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 2001120012003 its reverse (3002100211002), we get a palindrome (5003220223005).

The spelling of 2001120012003 in words is "two trillion, one billion, one hundred twenty million, twelve thousand, three".