20011321333 has 4 divisors (see below), whose sum is σ = 21188457900. Its totient is φ = 18834184768.

The previous prime is 20011321321. The next prime is 20011321339. The reversal of 20011321333 is 33312311002.

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 16406279569 + 3605041764 = 128087^2 + 60042^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011321333 - 2²⁵ = 19977766901 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 20011321333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011321339) 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, 588568258 + ... + 588568291.

It is an arithmetic number, because the mean of its divisors is an integer number (5297114475).

Almost surely, 2^20011321333 is an apocalyptic number.

It is an amenable number.

20011321333 is a deficient number, since it is larger than the sum of its proper divisors (1177136567).

20011321333 is a wasteful number, since it uses less digits than its factorization.

20011321333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177136566.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20011321333 its reverse (33312311002), we get a palindrome (53323632335).

The spelling of 20011321333 in words is "twenty billion, eleven million, three hundred twenty-one thousand, three hundred thirty-three".