21411132130000 has 100 divisors (see below), whose sum is σ = 51848805571200. Its totient is φ = 8562748912000.

The previous prime is 21411132129991. The next prime is 21411132130001. The reversal of 21411132130000 is 3123111412.

It is a tau number, because it is divible by the number of its divisors (100).

It is a self number, because there is not a number n which added to its sum of digits gives 21411132130000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411132130001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50659551 + ... + 51080449.

It is an arithmetic number, because the mean of its divisors is an integer number (518488055712).

Almost surely, 2^{21411132130000} is an apocalyptic number.

21411132130000 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 21411132130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25924402785600).

21411132130000 is an abundant number, since it is smaller than the sum of its proper divisors (30437673441200).

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

21411132130000 is an equidigital number, since it uses as much as digits as its factorization.

21411132130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426014 (or 425993 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21411132130000 its reverse (3123111412), we get a palindrome (21414255241412).

The spelling of 21411132130000 in words is "twenty-one trillion, four hundred eleven billion, one hundred thirty-two million, one hundred thirty thousand".