21541092621120 has 2688 divisors, whose sum is σ = 87110618849280. Its totient is φ = 4855431168000.

The previous prime is 21541092621079. The next prime is 21541092621121. The reversal of 21541092621120 is 2112629014512.

21541092621120 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 1 + 0 + 9 + 2 + 621 + 1 + 20 = 666.

21541092621120 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21541092621121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 190629138184 + ... + 190629138296.

Almost surely, 2^{21541092621120} is an apocalyptic number.

21541092621120 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 21541092621120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43555309424640).

21541092621120 is an abundant number, since it is smaller than the sum of its proper divisors (65569526228160).

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

21541092621120 is a wasteful number, since it uses less digits than its factorization.

21541092621120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 21541092621120 in words is "twenty-one trillion, five hundred forty-one billion, ninety-two million, six hundred twenty-one thousand, one hundred twenty".