21441130340 has 96 divisors (see below), whose sum is σ = 52370648064. Its totient is φ = 7221288960.

The previous prime is 21441130339. The next prime is 21441130349. The reversal of 21441130340 is 4303114412.

It is not an unprimeable number, because it can be changed into a prime (21441130349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10392149 + ... + 10394211.

It is an arithmetic number, because the mean of its divisors is an integer number (545527584).

Almost surely, 2^21441130340 is an apocalyptic number.

21441130340 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 21441130340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26185324032).

21441130340 is an abundant number, since it is smaller than the sum of its proper divisors (30929517724).

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

21441130340 is a wasteful number, since it uses less digits than its factorization.

21441130340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21441130340 its reverse (4303114412), we get a palindrome (25744244752).

The spelling of 21441130340 in words is "twenty-one billion, four hundred forty-one million, one hundred thirty thousand, three hundred forty".