2124455100 has 72 divisors (see below), whose sum is σ = 6167990640. Its totient is φ = 564564480.

The previous prime is 2124455071. The next prime is 2124455107. The reversal of 2124455100 is 15544212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124455107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75816 + ... + 99984.

Almost surely, 2^2124455100 is an apocalyptic number.

2124455100 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 2124455100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3083995320).

2124455100 is an abundant number, since it is smaller than the sum of its proper divisors (4043535540).

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

2124455100 is a wasteful number, since it uses less digits than its factorization.

2124455100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24479 (or 24472 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2124455100 is about 46091.8116372095. The cubic root of 2124455100 is about 1285.5308964183.

Adding to 2124455100 its reverse (15544212), we get a palindrome (2139999312).

The spelling of 2124455100 in words is "two billion, one hundred twenty-four million, four hundred fifty-five thousand, one hundred".