21301401000000 has 392 divisors, whose sum is σ = 76853621886048. Its totient is φ = 5163968000000.

The previous prime is 21301400999953. The next prime is 21301401000001. The reversal of 21301401000000 is 10410312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 21301401000000.

It is not an unprimeable number, because it can be changed into a prime (21301401000001) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 32677252 + ... + 33322748.

Almost surely, 2^{21301401000000} is an apocalyptic number.

21301401000000 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 21301401000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38426810943024).

21301401000000 is an abundant number, since it is smaller than the sum of its proper divisors (55552220886048).

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

21301401000000 is an frugal number, since it uses more digits than its factorization.

21301401000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645553 (or 645518 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21301401000000 its reverse (10410312), we get a palindrome (21301411410312).

The spelling of 21301401000000 in words is "twenty-one trillion, three hundred one billion, four hundred one million", and thus it is an aban number.