20111203011303 has 16 divisors (see below), whose sum is σ = 29794553238240. Its totient is φ = 13407388391232.

The previous prime is 20111203011287. The next prime is 20111203011439. The reversal of 20111203011303 is 30311030211102.

20111203011303 is a `hidden beast` number, since 201 + 1 + 120 + 30 + 11 + 303 = 666.

It is not a de Polignac number, because 20111203011303 - 2⁴ = 20111203011287 is a prime.

It is a super-3 number, since 3×20111203011303³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111203031303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2548675 + ... + 6835067.

It is an arithmetic number, because the mean of its divisors is an integer number (1862159577390).

Almost surely, 2^{20111203011303} is an apocalyptic number.

20111203011303 is a deficient number, since it is larger than the sum of its proper divisors (9683350226937).

20111203011303 is a wasteful number, since it uses less digits than its factorization.

20111203011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460175 (or 4460169 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20111203011303 its reverse (30311030211102), we get a palindrome (50422233222405).

The spelling of 20111203011303 in words is "twenty trillion, one hundred eleven billion, two hundred three million, eleven thousand, three hundred three".