2100243200 has 108 divisors (see below), whose sum is σ = 5671204728. Its totient is φ = 763699200.

The previous prime is 2100243179. The next prime is 2100243239. The reversal of 2100243200 is 23420012.

It is a super-2 number, since 2×2100243200² = 8822042998292480000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55484 + ... + 85316.

Almost surely, 2^2100243200 is an apocalyptic number.

2100243200 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 2100243200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2835602364).

2100243200 is an abundant number, since it is smaller than the sum of its proper divisors (3570961528).

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

2100243200 is a wasteful number, since it uses less digits than its factorization.

2100243200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29870 (or 29851 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2100243200 is about 45828.4104022821. The cubic root of 2100243200 is about 1280.6285975004.

Adding to 2100243200 its reverse (23420012), we get a palindrome (2123663212).

The spelling of 2100243200 in words is "two billion, one hundred million, two hundred forty-three thousand, two hundred".