2104221547 has 2 divisors, whose sum is σ = 2104221548. Its totient is φ = 2104221546.

The previous prime is 2104221491. The next prime is 2104221551. The reversal of 2104221547 is 7451224012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2104221547 - 2²³ = 2095832939 is a prime.

It is not a weakly prime, because it can be changed into another prime (2104221947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052110773 + 1052110774.

It is an arithmetic number, because the mean of its divisors is an integer number (1052110774).

Almost surely, 2^2104221547 is an apocalyptic number.

2104221547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104221547 is an equidigital number, since it uses as much as digits as its factorization.

2104221547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2104221547 is about 45871.7946782116. The cubic root of 2104221547 is about 1281.4366898552.

Adding to 2104221547 its reverse (7451224012), we get a palindrome (9555445559).

The spelling of 2104221547 in words is "two billion, one hundred four million, two hundred twenty-one thousand, five hundred forty-seven".