21444314214 has 16 divisors (see below), whose sum is σ = 43934693040. Its totient is φ = 6973760640.

The previous prime is 21444314191. The next prime is 21444314249. The reversal of 21444314214 is 41241344412.

It is a happy number.

It is a super-2 number, since 2×21444314214² (a number of 21 digits) contains 22 as substring.

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, 43585759 + ... + 43586250.

It is an arithmetic number, because the mean of its divisors is an integer number (2745918315).

Almost surely, 2^21444314214 is an apocalyptic number.

21444314214 is an abundant number, since it is smaller than the sum of its proper divisors (22490378826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21444314214 is a wasteful number, since it uses less digits than its factorization.

21444314214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87172055.

The product of its digits is 12288, while the sum is 30.

Adding to 21444314214 its reverse (41241344412), we get a palindrome (62685658626).

The spelling of 21444314214 in words is "twenty-one billion, four hundred forty-four million, three hundred fourteen thousand, two hundred fourteen".