21241502002700 has 288 divisors, whose sum is σ = 56180512967040. Its totient is φ = 6816428236800.

The previous prime is 21241502002661. The next prime is 21241502002709. The reversal of 21241502002700 is 720020514212.

It is a super-2 number, since 2×21241502002700² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21241502002700.

It is not an unprimeable number, because it can be changed into a prime (21241502002709) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 130589822 + ... + 130752378.

It is an arithmetic number, because the mean of its divisors is an integer number (195071225580).

Almost surely, 2^{21241502002700} is an apocalyptic number.

21241502002700 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 21241502002700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28090256483520).

21241502002700 is an abundant number, since it is smaller than the sum of its proper divisors (34939010964340).

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

21241502002700 is a wasteful number, since it uses less digits than its factorization.

21241502002700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162805 (or 162798 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 21241502002700 its reverse (720020514212), we get a palindrome (21961522516912).

The spelling of 21241502002700 in words is "twenty-one trillion, two hundred forty-one billion, five hundred two million, two thousand, seven hundred".