20321232111 has 12 divisors (see below), whose sum is σ = 29354277160. Its totient is φ = 13546848240.

The previous prime is 20321232109. The next prime is 20321232119. The reversal of 20321232111 is 11123212302.

20321232111 is a `hidden beast` number, since 2 + 0 + 321 + 232 + 111 = 666.

It is not a de Polignac number, because 20321232111 - 2¹ = 20321232109 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 (20321232119) 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, 223425 + ... + 300933.

Almost surely, 2^20321232111 is an apocalyptic number.

20321232111 is a deficient number, since it is larger than the sum of its proper divisors (9033045049).

20321232111 is a wasteful number, since it uses less digits than its factorization.

20321232111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106646 (or 106643 counting only the distinct ones).

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

Adding to 20321232111 its reverse (11123212302), we get a palindrome (31444444413).

The spelling of 20321232111 in words is "twenty billion, three hundred twenty-one million, two hundred thirty-two thousand, one hundred eleven".