20321133111 has 12 divisors (see below), whose sum is σ = 29354009880. Its totient is φ = 13546839600.

The previous prime is 20321133047. The next prime is 20321133139. The reversal of 20321133111 is 11133112302.

20321133111 is a `hidden beast` number, since 2 + 0 + 321 + 1 + 331 + 11 = 666.

It is not a de Polignac number, because 20321133111 - 2⁶ = 20321133047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321133211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318436 + ... + 376886.

It is an arithmetic number, because the mean of its divisors is an integer number (2446167490).

Almost surely, 2^20321133111 is an apocalyptic number.

20321133111 is a deficient number, since it is larger than the sum of its proper divisors (9032876769).

20321133111 is a wasteful number, since it uses less digits than its factorization.

20321133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97086 (or 97083 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20321133111 its reverse (11133112302), we get a palindrome (31454245413).

The spelling of 20321133111 in words is "twenty billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred eleven".