21343112 has 32 divisors (see below), whose sum is σ = 46110720. Its totient is φ = 9072000.

The previous prime is 21343111. The next prime is 21343129. The reversal of 21343112 is 21134312.

It is not an unprimeable number, because it can be changed into a prime (21343111) by changing a digit.

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, 5612 + ... + 8612.

It is an arithmetic number, because the mean of its divisors is an integer number (1440960).

Almost surely, 2^21343112 is an apocalyptic number.

It is an amenable number.

21343112 is an abundant number, since it is smaller than the sum of its proper divisors (24767608).

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

21343112 is a wasteful number, since it uses less digits than its factorization.

21343112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3137 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 21343112 is about 4619.8606039577. The cubic root of 21343112 is about 277.3868791971.

Adding to 21343112 its reverse (21134312), we get a palindrome (42477424).

The spelling of 21343112 in words is "twenty-one million, three hundred forty-three thousand, one hundred twelve".