21411135320000 has 140 divisors (see below), whose sum is σ = 53245696266840. Its totient is φ = 8539767168000.

The previous prime is 21411135319991. The next prime is 21411135320017. The reversal of 21411135320000 is 2353111412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13108706 + ... + 14651294.

It is an arithmetic number, because the mean of its divisors is an integer number (380326401906).

Almost surely, 2^{21411135320000} is an apocalyptic number.

21411135320000 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 21411135320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26622848133420).

21411135320000 is an abundant number, since it is smaller than the sum of its proper divisors (31834560946840).

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

21411135320000 is an equidigital number, since it uses as much as digits as its factorization.

21411135320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542968 (or 1542943 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21411135320000 its reverse (2353111412), we get a palindrome (21413488431412).

The spelling of 21411135320000 in words is "twenty-one trillion, four hundred eleven billion, one hundred thirty-five million, three hundred twenty thousand".