2101040443 has 2 divisors, whose sum is σ = 2101040444. Its totient is φ = 2101040442.

The previous prime is 2101040441. The next prime is 2101040519. The reversal of 2101040443 is 3440401012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101040443 - 2¹ = 2101040441 is a prime.

Together with 2101040441, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2101040443.

It is not a weakly prime, because it can be changed into another prime (2101040441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050520221 + 1050520222.

It is an arithmetic number, because the mean of its divisors is an integer number (1050520222).

Almost surely, 2^2101040443 is an apocalyptic number.

2101040443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101040443 is an equidigital number, since it uses as much as digits as its factorization.

2101040443 is an evil number, because the sum of its binary digits is even.

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

The square root of 2101040443 is about 45837.1077076205. The cubic root of 2101040443 is about 1280.7906173126.

Adding to 2101040443 its reverse (3440401012), we get a palindrome (5541441455).

The spelling of 2101040443 in words is "two billion, one hundred one million, forty thousand, four hundred forty-three".