21301301420340 has 48 divisors (see below), whose sum is σ = 59668321108032. Its totient is φ = 5677996842496.

The previous prime is 21301301420291. The next prime is 21301301420381. The reversal of 21301301420340 is 4302410310312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21301301420340.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 73297614 + ... + 73587653.

It is an arithmetic number, because the mean of its divisors is an integer number (1243090023084).

Almost surely, 2^{21301301420340} is an apocalyptic number.

21301301420340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301301420340 is an abundant number, since it is smaller than the sum of its proper divisors (38367019687692).

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

21301301420340 is a wasteful number, since it uses less digits than its factorization.

21301301420340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146887696 (or 146887694 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21301301420340 its reverse (4302410310312), we get a palindrome (25603711730652).

The spelling of 21301301420340 in words is "twenty-one trillion, three hundred one billion, three hundred one million, four hundred twenty thousand, three hundred forty".