20043321111 has 12 divisors (see below), whose sum is σ = 31583415240. Its totient is φ = 12147467280.

The previous prime is 20043321101. The next prime is 20043321209. The reversal of 20043321111 is 11112334002.

20043321111 is a `hidden beast` number, since 20 + 0 + 433 + 211 + 1 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-20043321111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043321101) 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 11 ways as a sum of consecutive naturals, for example, 101228796 + ... + 101228993.

It is an arithmetic number, because the mean of its divisors is an integer number (2631951270).

Almost surely, 2^20043321111 is an apocalyptic number.

20043321111 is a deficient number, since it is larger than the sum of its proper divisors (11540094129).

20043321111 is a wasteful number, since it uses less digits than its factorization.

20043321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202457806 (or 202457803 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20043321111 its reverse (11112334002), we get a palindrome (31155655113).

The spelling of 20043321111 in words is "twenty billion, forty-three million, three hundred twenty-one thousand, one hundred eleven".