21043443114 has 120 divisors (see below), whose sum is σ = 48683840832. Its totient is φ = 6793521840.

The previous prime is 21043443079. The next prime is 21043443121. The reversal of 21043443114 is 41134434012.

21043443114 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 344 + 311 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 48824479 + ... + 48824909.

Almost surely, 2^21043443114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21043443114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24341920416).

21043443114 is an abundant number, since it is smaller than the sum of its proper divisors (27640397718).

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

21043443114 is a wasteful number, since it uses less digits than its factorization.

21043443114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21043443114 its reverse (41134434012), we get a palindrome (62177877126).

The spelling of 21043443114 in words is "twenty-one billion, forty-three million, four hundred forty-three thousand, one hundred fourteen".