21444134214 has 32 divisors (see below), whose sum is σ = 43219169280. Its totient is φ = 7093080000.

The previous prime is 21444134207. The next prime is 21444134269. The reversal of 21444134214 is 41243144412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445839 + ... + 491589.

It is an arithmetic number, because the mean of its divisors is an integer number (1350599040).

Almost surely, 2^21444134214 is an apocalyptic number.

21444134214 is an abundant number, since it is smaller than the sum of its proper divisors (21775035066).

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

21444134214 is a wasteful number, since it uses less digits than its factorization.

21444134214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46356.

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

Adding to 21444134214 its reverse (41243144412), we get a palindrome (62687278626).

The spelling of 21444134214 in words is "twenty-one billion, four hundred forty-four million, one hundred thirty-four thousand, two hundred fourteen".