21143444010 has 32 divisors (see below), whose sum is σ = 54647671680. Its totient is φ = 5204539968.

The previous prime is 21143444009. The next prime is 21143444083. The reversal of 21143444010 is 1044434112.

It is a super-3 number, since 3×21143444010³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27106590 + ... + 27107369.

It is an arithmetic number, because the mean of its divisors is an integer number (1707739740).

Almost surely, 2^21143444010 is an apocalyptic number.

21143444010 is an abundant number, since it is smaller than the sum of its proper divisors (33504227670).

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

21143444010 is a wasteful number, since it uses less digits than its factorization.

21143444010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54213982.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21143444010 its reverse (1044434112), we get a palindrome (22187878122).

The spelling of 21143444010 in words is "twenty-one billion, one hundred forty-three million, four hundred forty-four thousand, ten".