21143340112 has 20 divisors (see below), whose sum is σ = 41917902400. Its totient is φ = 10325816928.

The previous prime is 21143340059. The next prime is 21143340121. The reversal of 21143340112 is 21104334112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15365112 + ... + 15366487.

It is an arithmetic number, because the mean of its divisors is an integer number (2095895120).

Almost surely, 2^21143340112 is an apocalyptic number.

It is an amenable number.

21143340112 is a deficient number, since it is larger than the sum of its proper divisors (20774562288).

21143340112 is a wasteful number, since it uses less digits than its factorization.

21143340112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30731650 (or 30731644 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21143340112 its reverse (21104334112), we get a palindrome (42247674224).

The spelling of 21143340112 in words is "twenty-one billion, one hundred forty-three million, three hundred forty thousand, one hundred twelve".