2100122110000 has 150 divisors (see below), whose sum is σ = 5172331802132. Its totient is φ = 825797040000.

The previous prime is 2100122109991. The next prime is 2100122110043. The reversal of 2100122110000 is 112210012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 34779835 + ... + 34840165.

Almost surely, 2^{2100122110000} is an apocalyptic number.

2100122110000 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 2100122110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586165901066).

2100122110000 is an abundant number, since it is smaller than the sum of its proper divisors (3072209692132).

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

2100122110000 is an frugal number, since it uses more digits than its factorization.

2100122110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60477 (or 60397 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2100122110000 its reverse (112210012), we get a palindrome (2100234320012).

It can be divided in two parts, 2100122 and 110000, that added together give a palindrome (2210122).

The spelling of 2100122110000 in words is "two trillion, one hundred billion, one hundred twenty-two million, one hundred ten thousand".