2100211110120 has 128 divisors (see below), whose sum is σ = 6456500835840. Its totient is φ = 546239151360.

The previous prime is 2100211110079. The next prime is 2100211110181. The reversal of 2100211110120 is 210111120012.

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

It is a junction number, because it is equal to n+sod(n) for n = 2100211110096 and 2100211110105.

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, 3271047 + ... + 3860073.

It is an arithmetic number, because the mean of its divisors is an integer number (50441412780).

Almost surely, 2^{2100211110120} is an apocalyptic number.

2100211110120 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 2100211110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3228250417920).

2100211110120 is an abundant number, since it is smaller than the sum of its proper divisors (4356289725720).

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

2100211110120 is a wasteful number, since it uses less digits than its factorization.

2100211110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589775 (or 589771 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2100211110120 its reverse (210111120012), we get a palindrome (2310322230132).

The spelling of 2100211110120 in words is "two trillion, one hundred billion, two hundred eleven million, one hundred ten thousand, one hundred twenty".