21021304141300 has 72 divisors (see below), whose sum is σ = 46376298836280. Its totient is φ = 8268489715200.

The previous prime is 21021304141249. The next prime is 21021304141309. The reversal of 21021304141300 is 314140312012.

It can be written as a sum of positive squares in 12 ways, for example, as 19721184249316 + 1300119891984 = 4440854^2 + 1140228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021304141309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22707906 + ... + 23615494.

It is an arithmetic number, because the mean of its divisors is an integer number (644115261615).

Almost surely, 2^{21021304141300} is an apocalyptic number.

21021304141300 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 21021304141300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23188149418140).

21021304141300 is an abundant number, since it is smaller than the sum of its proper divisors (25354994694980).

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

21021304141300 is a wasteful number, since it uses less digits than its factorization.

21021304141300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911461 (or 911454 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21021304141300 its reverse (314140312012), we get a palindrome (21335444453312).

The spelling of 21021304141300 in words is "twenty-one trillion, twenty-one billion, three hundred four million, one hundred forty-one thousand, three hundred".