20003122321111 has 24 divisors (see below), whose sum is σ = 22294893754224. Its totient is φ = 17879290544640.

The previous prime is 20003122321093. The next prime is 20003122321121. The reversal of 20003122321111 is 11112322130002.

It is a de Polignac number, because none of the positive numbers 2^k-20003122321111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003122321121) 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 23 ways as a sum of consecutive naturals, for example, 10596025 + ... + 12340258.

It is an arithmetic number, because the mean of its divisors is an integer number (928953906426).

Almost surely, 2^{20003122321111} is an apocalyptic number.

20003122321111 is a deficient number, since it is larger than the sum of its proper divisors (2291771433113).

20003122321111 is a wasteful number, since it uses less digits than its factorization.

20003122321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22936419 (or 22936390 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20003122321111 its reverse (11112322130002), we get a palindrome (31115444451113).

The spelling of 20003122321111 in words is "twenty trillion, three billion, one hundred twenty-two million, three hundred twenty-one thousand, one hundred eleven".