20121002011003 has 16 divisors (see below), whose sum is σ = 20328373896192. Its totient is φ = 19915040376000.

The previous prime is 20121002011001. The next prime is 20121002011007. The reversal of 20121002011003 is 30011020012102.

It is a cyclic number.

It is not a de Polignac number, because 20121002011003 - 2¹ = 20121002011001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121002011001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24806850 + ... + 25605112.

It is an arithmetic number, because the mean of its divisors is an integer number (1270523368512).

Almost surely, 2^{20121002011003} is an apocalyptic number.

20121002011003 is a deficient number, since it is larger than the sum of its proper divisors (207371885189).

20121002011003 is a wasteful number, since it uses less digits than its factorization.

20121002011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799146.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20121002011003 its reverse (30011020012102), we get a palindrome (50132022023105).

The spelling of 20121002011003 in words is "twenty trillion, one hundred twenty-one billion, two million, eleven thousand, three".