20111203033133 has 4 divisors (see below), whose sum is σ = 20118670990908. Its totient is φ = 20103735075360.

The previous prime is 20111203033049. The next prime is 20111203033157. The reversal of 20111203033133 is 33133030211102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2513832447049 + 17597370586084 = 1585507^2 + 4194922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111203033133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111203033099 and 20111203033108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111203039133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3733974848 + ... + 3733980233.

It is an arithmetic number, because the mean of its divisors is an integer number (5029667747727).

Almost surely, 2^{20111203033133} is an apocalyptic number.

It is an amenable number.

20111203033133 is a deficient number, since it is larger than the sum of its proper divisors (7467957775).

20111203033133 is an equidigital number, since it uses as much as digits as its factorization.

20111203033133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7467957774.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 20111203033133 its reverse (33133030211102), we get a palindrome (53244233244235).

The spelling of 20111203033133 in words is "twenty trillion, one hundred eleven billion, two hundred three million, thirty-three thousand, one hundred thirty-three".