21244303410 has 128 divisors (see below), whose sum is σ = 57605603328. Its totient is φ = 4967520000.

The previous prime is 21244303391. The next prime is 21244303417. The reversal of 21244303410 is 1430344212.

It is a super-2 number, since 2×21244303410² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21244303417) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3239635 + ... + 3246185.

It is an arithmetic number, because the mean of its divisors is an integer number (450043776).

Almost surely, 2^21244303410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21244303410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28802801664).

21244303410 is an abundant number, since it is smaller than the sum of its proper divisors (36361299918).

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

21244303410 is a wasteful number, since it uses less digits than its factorization.

21244303410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6920.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21244303410 its reverse (1430344212), we get a palindrome (22674647622).

The spelling of 21244303410 in words is "twenty-one billion, two hundred forty-four million, three hundred three thousand, four hundred ten".