21344004214 has 16 divisors (see below), whose sum is σ = 34495060320. Its totient is φ = 9846426240.

The previous prime is 21344004211. The next prime is 21344004247. The reversal of 21344004214 is 41240044312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344004211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137442 + ... + 248149.

It is an arithmetic number, because the mean of its divisors is an integer number (2155941270).

Almost surely, 2^21344004214 is an apocalyptic number.

21344004214 is a deficient number, since it is larger than the sum of its proper divisors (13151056106).

21344004214 is a wasteful number, since it uses less digits than its factorization.

21344004214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387735.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21344004214 its reverse (41240044312), we get a palindrome (62584048526).

The spelling of 21344004214 in words is "twenty-one billion, three hundred forty-four million, four thousand, two hundred fourteen".