20011133112233 has 4 divisors (see below), whose sum is σ = 20018768037828. Its totient is φ = 20003498186640.

The previous prime is 20011133112203. The next prime is 20011133112239. The reversal of 20011133112233 is 33221133111002.

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 10733309525929 + 9277823586304 = 3276173^2 + 3045952^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011133112233 - 2¹⁰ = 20011133111209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011133112199 and 20011133112208.

It is not an unprimeable number, because it can be changed into a prime (20011133112239) 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 3 ways as a sum of consecutive naturals, for example, 3817458866 + ... + 3817464107.

It is an arithmetic number, because the mean of its divisors is an integer number (5004692009457).

Almost surely, 2^{20011133112233} is an apocalyptic number.

It is an amenable number.

20011133112233 is a deficient number, since it is larger than the sum of its proper divisors (7634925595).

20011133112233 is an equidigital number, since it uses as much as digits as its factorization.

20011133112233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634925594.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 20011133112233 its reverse (33221133111002), we get a palindrome (53232266223235).

The spelling of 20011133112233 in words is "twenty trillion, eleven billion, one hundred thirty-three million, one hundred twelve thousand, two hundred thirty-three".