23121112 has 32 divisors (see below), whose sum is σ = 49950720. Its totient is φ = 9828000.

The previous prime is 23121103. The next prime is 23121127. The reversal of 23121112 is 21112132.

It is a junction number, because it is equal to n+sod(n) for n = 23121092 and 23121101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5487 + ... + 8737.

It is an arithmetic number, because the mean of its divisors is an integer number (1560960).

Almost surely, 2^23121112 is an apocalyptic number.

It is an amenable number.

23121112 is an abundant number, since it is smaller than the sum of its proper divisors (26829608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23121112 is a wasteful number, since it uses less digits than its factorization.

23121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3387 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 23121112 is about 4808.4417434341. The cubic root of 23121112 is about 284.8849930965.

Adding to 23121112 its reverse (21112132), we get a palindrome (44233244).

The spelling of 23121112 in words is "twenty-three million, one hundred twenty-one thousand, one hundred twelve".