2100111022320 has 160 divisors (see below), whose sum is σ = 6687315823680. Its totient is φ = 544810844160.

The previous prime is 2100111022301. The next prime is 2100111022393. The reversal of 2100111022320 is 232201110012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2100111022320.

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, 76967080 + ... + 76994360.

It is an arithmetic number, because the mean of its divisors is an integer number (41795723898).

Almost surely, 2^{2100111022320} is an apocalyptic number.

2100111022320 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 2100111022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3343657911840).

2100111022320 is an abundant number, since it is smaller than the sum of its proper divisors (4587204801360).

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

2100111022320 is a wasteful number, since it uses less digits than its factorization.

2100111022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36003 (or 35997 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2100111022320 its reverse (232201110012), we get a palindrome (2332312132332).

The spelling of 2100111022320 in words is "two trillion, one hundred billion, one hundred eleven million, twenty-two thousand, three hundred twenty".