21124404022000 has 160 divisors (see below), whose sum is σ = 53787437383680. Its totient is φ = 8002019462400.

The previous prime is 21124404021989. The next prime is 21124404022081. The reversal of 21124404022000 is 22040442112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102002557 + ... + 102209443.

It is an arithmetic number, because the mean of its divisors is an integer number (336171483648).

Almost surely, 2^{21124404022000} is an apocalyptic number.

21124404022000 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 21124404022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26893718691840).

21124404022000 is an abundant number, since it is smaller than the sum of its proper divisors (32663033361680).

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

21124404022000 is a wasteful number, since it uses less digits than its factorization.

21124404022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209616 (or 209600 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21124404022000 its reverse (22040442112), we get a palindrome (21146444464112).

The spelling of 21124404022000 in words is "twenty-one trillion, one hundred twenty-four billion, four hundred four million, twenty-two thousand".