21344114221 has 8 divisors (see below), whose sum is σ = 21549875040. Its totient is φ = 21138469968.

The previous prime is 21344114213. The next prime is 21344114237. The reversal of 21344114221 is 12241144312.

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

It is a cyclic number.

It is not a de Polignac number, because 21344114221 - 2³ = 21344114213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344114251) 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, 364255 + ... + 418771.

It is an arithmetic number, because the mean of its divisors is an integer number (2693734380).

Almost surely, 2^21344114221 is an apocalyptic number.

It is an amenable number.

21344114221 is a deficient number, since it is larger than the sum of its proper divisors (205760819).

21344114221 is a wasteful number, since it uses less digits than its factorization.

21344114221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58283.

The product of its digits is 1536, while the sum is 25.

Adding to 21344114221 its reverse (12241144312), we get a palindrome (33585258533).

The spelling of 21344114221 in words is "twenty-one billion, three hundred forty-four million, one hundred fourteen thousand, two hundred twenty-one".