2144521105 has 8 divisors (see below), whose sum is σ = 2599956072. Its totient is φ = 1697929728.

The previous prime is 2144521103. The next prime is 2144521129. The reversal of 2144521105 is 5011254412.

It can be written as a sum of positive squares in 4 ways, for example, as 153933649 + 1990587456 = 12407^2 + 44616^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144521105 - 2¹ = 2144521103 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 2144521105.

It is not an unprimeable number, because it can be changed into a prime (2144521103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210362 + ... + 2211331.

It is an arithmetic number, because the mean of its divisors is an integer number (324994509).

Almost surely, 2^2144521105 is an apocalyptic number.

It is an amenable number.

2144521105 is a deficient number, since it is larger than the sum of its proper divisors (455434967).

2144521105 is an equidigital number, since it uses as much as digits as its factorization.

2144521105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421795.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2144521105 is about 46308.9743462323. The cubic root of 2144521105 is about 1289.5656059973.

Adding to 2144521105 its reverse (5011254412), we get a palindrome (7155775517).

The spelling of 2144521105 in words is "two billion, one hundred forty-four million, five hundred twenty-one thousand, one hundred five".