21302125040000 has 320 divisors, whose sum is σ = 60652581960960. Its totient is φ = 7297980672000.

The previous prime is 21302125039999. The next prime is 21302125040023. The reversal of 21302125040000 is 4052120312.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 765506087 + ... + 765533913.

It is an arithmetic number, because the mean of its divisors is an integer number (189539318628).

Almost surely, 2^{21302125040000} is an apocalyptic number.

21302125040000 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 21302125040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30326290980480).

21302125040000 is an abundant number, since it is smaller than the sum of its proper divisors (39350456920960).

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

21302125040000 is an equidigital number, since it uses as much as digits as its factorization.

21302125040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29235 (or 29208 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 21302125040000 its reverse (4052120312), we get a palindrome (21306177160312).

The spelling of 21302125040000 in words is "twenty-one trillion, three hundred two billion, one hundred twenty-five million, forty thousand".