2124100243 has 4 divisors (see below), whose sum is σ = 2175907608. Its totient is φ = 2072292880.

The previous prime is 2124100229. The next prime is 2124100247. The reversal of 2124100243 is 3420014212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2124100243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2124100243.

It is not an unprimeable number, because it can be changed into a prime (2124100247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25903621 + ... + 25903702.

It is an arithmetic number, because the mean of its divisors is an integer number (543976902).

Almost surely, 2^2124100243 is an apocalyptic number.

2124100243 is a deficient number, since it is larger than the sum of its proper divisors (51807365).

2124100243 is an equidigital number, since it uses as much as digits as its factorization.

2124100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51807364.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2124100243 is about 46087.9620182971. The cubic root of 2124100243 is about 1285.4593164888.

Adding to 2124100243 its reverse (3420014212), we get a palindrome (5544114455).

The spelling of 2124100243 in words is "two billion, one hundred twenty-four million, one hundred thousand, two hundred forty-three".