2521100243 has 2 divisors, whose sum is σ = 2521100244. Its totient is φ = 2521100242.

The previous prime is 2521100213. The next prime is 2521100249. The reversal of 2521100243 is 3420011252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521100243 - 2¹⁶ = 2521034707 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521100249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260550121 + 1260550122.

It is an arithmetic number, because the mean of its divisors is an integer number (1260550122).

Almost surely, 2^2521100243 is an apocalyptic number.

2521100243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521100243 is an equidigital number, since it uses as much as digits as its factorization.

2521100243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2521100243 is about 50210.5590787436. The cubic root of 2521100243 is about 1361.0164407962.

Adding to 2521100243 its reverse (3420011252), we get a palindrome (5941111495).

The spelling of 2521100243 in words is "two billion, five hundred twenty-one million, one hundred thousand, two hundred forty-three".