21144234014 has 8 divisors (see below), whose sum is σ = 31717232640. Its totient is φ = 10571823136.

The previous prime is 21144233969. The next prime is 21144234019. The reversal of 21144234014 is 41043244112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21144234019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42014 + ... + 209889.

It is an arithmetic number, because the mean of its divisors is an integer number (3964654080).

Almost surely, 2^21144234014 is an apocalyptic number.

21144234014 is a deficient number, since it is larger than the sum of its proper divisors (10572998626).

21144234014 is a wasteful number, since it uses less digits than its factorization.

21144234014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293874.

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

Adding to 21144234014 its reverse (41043244112), we get a palindrome (62187478126).

The spelling of 21144234014 in words is "twenty-one billion, one hundred forty-four million, two hundred thirty-four thousand, fourteen".