2100212201100 has 288 divisors, whose sum is σ = 6662151720000. Its totient is φ = 507723448320.

The previous prime is 2100212201099. The next prime is 2100212201123. The reversal of 2100212201100 is 11022120012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51697596 + ... + 51738204.

It is an arithmetic number, because the mean of its divisors is an integer number (23132471250).

Almost surely, 2^{2100212201100} is an apocalyptic number.

2100212201100 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 2100212201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3331075860000).

2100212201100 is an abundant number, since it is smaller than the sum of its proper divisors (4561939518900).

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

2100212201100 is a wasteful number, since it uses less digits than its factorization.

2100212201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40877 (or 40870 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100212201100 its reverse (11022120012), we get a palindrome (2111234321112).

The spelling of 2100212201100 in words is "two trillion, one hundred billion, two hundred twelve million, two hundred one thousand, one hundred".