21010100303120 has 20 divisors (see below), whose sum is σ = 48848483204940. Its totient is φ = 8404040121216.

The previous prime is 21010100303119. The next prime is 21010100303131. The reversal of 21010100303120 is 2130300101012.

It can be written as a sum of positive squares in 2 ways, for example, as 7002416779264 + 14007683523856 = 2646208^2 + 3742684^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 21010100303095 and 21010100303104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131313126815 + ... + 131313126974.

It is an arithmetic number, because the mean of its divisors is an integer number (2442424160247).

Almost surely, 2^{21010100303120} is an apocalyptic number.

21010100303120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010100303120 is an abundant number, since it is smaller than the sum of its proper divisors (27838382901820).

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

21010100303120 is a wasteful number, since it uses less digits than its factorization.

21010100303120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262626253802 (or 262626253796 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21010100303120 its reverse (2130300101012), we get a palindrome (23140400404132).

The spelling of 21010100303120 in words is "twenty-one trillion, ten billion, one hundred million, three hundred three thousand, one hundred twenty".