21002111012000 has 192 divisors, whose sum is σ = 53292670599168. Its totient is φ = 8125896960000.

The previous prime is 21002111011997. The next prime is 21002111012011. The reversal of 21002111012000 is 21011120012.

21002111012000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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, 261723884 + ... + 261804116.

It is an arithmetic number, because the mean of its divisors is an integer number (277565992704).

Almost surely, 2^{21002111012000} is an apocalyptic number.

21002111012000 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 21002111012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26646335299584).

21002111012000 is an abundant number, since it is smaller than the sum of its proper divisors (32290559587168).

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

21002111012000 is a wasteful number, since it uses less digits than its factorization.

21002111012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82400 (or 82382 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21002111012000 its reverse (21011120012), we get a palindrome (21023122132012).

The spelling of 21002111012000 in words is "twenty-one trillion, two billion, one hundred eleven million, twelve thousand".