21200102110012 has 96 divisors (see below), whose sum is σ = 43792773026688. Its totient is φ = 8792882601984.

The previous prime is 21200102109971. The next prime is 21200102110021. The reversal of 21200102110012 is 21001120100212.

It is a junction number, because it is equal to n+sod(n) for n = 21200102109974 and 21200102110001.

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, 31587268 + ... + 32251444.

It is an arithmetic number, because the mean of its divisors is an integer number (456174719028).

Almost surely, 2^{21200102110012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21200102110012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21896386513344).

21200102110012 is an abundant number, since it is smaller than the sum of its proper divisors (22592670916676).

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

21200102110012 is a wasteful number, since it uses less digits than its factorization.

21200102110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664535 (or 664533 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21200102110012 its reverse (21001120100212), we get a palindrome (42201222210224).

The spelling of 21200102110012 in words is "twenty-one trillion, two hundred billion, one hundred two million, one hundred ten thousand, twelve".