21412224040 has 96 divisors (see below), whose sum is σ = 50982372000. Its totient is φ = 8092453248.

The previous prime is 21412224023. The next prime is 21412224061. The reversal of 21412224040 is 4042221412.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6048591 + ... + 6052129.

It is an arithmetic number, because the mean of its divisors is an integer number (531066375).

Almost surely, 2^21412224040 is an apocalyptic number.

21412224040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21412224040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25491186000).

21412224040 is an abundant number, since it is smaller than the sum of its proper divisors (29570147960).

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

21412224040 is a wasteful number, since it uses less digits than its factorization.

21412224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007 (or 3984 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21412224040 its reverse (4042221412), we get a palindrome (25454445452).

The spelling of 21412224040 in words is "twenty-one billion, four hundred twelve million, two hundred twenty-four thousand, forty".