21341121113400 has 192 divisors, whose sum is σ = 72351779904000. Its totient is φ = 5160702720000.

The previous prime is 21341121113383. The next prime is 21341121113419. The reversal of 21341121113400 is 431112114312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1385200 + ... + 6678399.

It is an arithmetic number, because the mean of its divisors is an integer number (376832187000).

Almost surely, 2^{21341121113400} is an apocalyptic number.

21341121113400 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 21341121113400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36175889952000).

21341121113400 is an abundant number, since it is smaller than the sum of its proper divisors (51010658790600).

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

21341121113400 is a wasteful number, since it uses less digits than its factorization.

21341121113400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8064030 (or 8064021 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 21341121113400 its reverse (431112114312), we get a palindrome (21772233227712).

The spelling of 21341121113400 in words is "twenty-one trillion, three hundred forty-one billion, one hundred twenty-one million, one hundred thirteen thousand, four hundred".