21124344214 has 16 divisors (see below), whose sum is σ = 32551773408. Its totient is φ = 10273908672.

The previous prime is 21124344203. The next prime is 21124344221. The reversal of 21124344214 is 41244342112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248914 + ... + 322810.

It is an arithmetic number, because the mean of its divisors is an integer number (2034485838).

Almost surely, 2^21124344214 is an apocalyptic number.

21124344214 is a deficient number, since it is larger than the sum of its proper divisors (11427429194).

21124344214 is a wasteful number, since it uses less digits than its factorization.

21124344214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77799.

The product of its digits is 6144, while the sum is 28.

Adding to 21124344214 its reverse (41244342112), we get a palindrome (62368686326).

The spelling of 21124344214 in words is "twenty-one billion, one hundred twenty-four million, three hundred forty-four thousand, two hundred fourteen".