21143224214 has 32 divisors (see below), whose sum is σ = 37835030016. Its totient is φ = 8664289920.

The previous prime is 21143224127. The next prime is 21143224243. The reversal of 21143224214 is 41242234112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025669 + ... + 1046079.

It is an arithmetic number, because the mean of its divisors is an integer number (1182344688).

Almost surely, 2^21143224214 is an apocalyptic number.

21143224214 is a deficient number, since it is larger than the sum of its proper divisors (16691805802).

21143224214 is a wasteful number, since it uses less digits than its factorization.

21143224214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23660.

The product of its digits is 3072, while the sum is 26.

Adding to 21143224214 its reverse (41242234112), we get a palindrome (62385458326).

The spelling of 21143224214 in words is "twenty-one billion, one hundred forty-three million, two hundred twenty-four thousand, two hundred fourteen".