21013213320112 has 160 divisors (see below), whose sum is σ = 45207166556160. Its totient is φ = 9402438389760.

The previous prime is 21013213320103. The next prime is 21013213320167. The reversal of 21013213320112 is 21102331231012.

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, 292786312 + ... + 292858072.

It is an arithmetic number, because the mean of its divisors is an integer number (282544790976).

Almost surely, 2^{21013213320112} 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 21013213320112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22603583278080).

21013213320112 is an abundant number, since it is smaller than the sum of its proper divisors (24193953236048).

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

21013213320112 is a wasteful number, since it uses less digits than its factorization.

21013213320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72171 (or 72165 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21013213320112 its reverse (21102331231012), we get a palindrome (42115544551124).

The spelling of 21013213320112 in words is "twenty-one trillion, thirteen billion, two hundred thirteen million, three hundred twenty thousand, one hundred twelve".