2100124000 has 96 divisors (see below), whose sum is σ = 5557065696. Its totient is φ = 775411200.

The previous prime is 2100123973. The next prime is 2100124009. The reversal of 2100124000 is 4210012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100124009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31807 + ... + 72193.

It is an arithmetic number, because the mean of its divisors is an integer number (57886101).

Almost surely, 2^2100124000 is an apocalyptic number.

2100124000 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 2100124000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2778532848).

2100124000 is an abundant number, since it is smaller than the sum of its proper divisors (3456941696).

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

2100124000 is a wasteful number, since it uses less digits than its factorization.

2100124000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40425 (or 40407 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2100124000 is about 45827.1098805063. The cubic root of 2100124000 is about 1280.6043695416.

Adding to 2100124000 its reverse (4210012), we get a palindrome (2104334012).

The spelling of 2100124000 in words is "two billion, one hundred million, one hundred twenty-four thousand".