20322031111 has 16 divisors (see below), whose sum is σ = 20878663680. Its totient is φ = 19773542880.

The previous prime is 20322031109. The next prime is 20322031189. The reversal of 20322031111 is 11113022302.

It is a cyclic number.

It is not a de Polignac number, because 20322031111 - 2¹ = 20322031109 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 (20322038111) 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 15 ways as a sum of consecutive naturals, for example, 2777520 + ... + 2784826.

It is an arithmetic number, because the mean of its divisors is an integer number (1304916480).

Almost surely, 2^20322031111 is an apocalyptic number.

20322031111 is a deficient number, since it is larger than the sum of its proper divisors (556632569).

20322031111 is a wasteful number, since it uses less digits than its factorization.

20322031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7854.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20322031111 its reverse (11113022302), we get a palindrome (31435053413).

The spelling of 20322031111 in words is "twenty billion, three hundred twenty-two million, thirty-one thousand, one hundred eleven".