21441113043400 has 96 divisors (see below), whose sum is σ = 50101971114600. Its totient is φ = 8533246924800.

The previous prime is 21441113043289. The next prime is 21441113043401. The reversal of 21441113043400 is 434031114412.

It can be written as a sum of positive squares in 12 ways, for example, as 4837721068324 + 16603391975076 = 2199482^2 + 4074726^2 .

It is a super-2 number, since 2×21441113043400² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21441113043401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68222620 + ... + 68536180.

Almost surely, 2^{21441113043400} is an apocalyptic number.

21441113043400 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 21441113043400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25050985557300).

21441113043400 is an abundant number, since it is smaller than the sum of its proper divisors (28660858071200).

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

21441113043400 is a wasteful number, since it uses less digits than its factorization.

21441113043400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315299 (or 315290 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21441113043400 its reverse (434031114412), we get a palindrome (21875144157812).

The spelling of 21441113043400 in words is "twenty-one trillion, four hundred forty-one billion, one hundred thirteen million, forty-three thousand, four hundred".