84001222210049 has 4 divisors (see below), whose sum is σ = 88942470575364. Its totient is φ = 79059973844736.

The previous prime is 84001222210043. The next prime is 84001222210051. The reversal of 84001222210049 is 94001222210048.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68141194733824 + 15860027476225 = 8254768^2 + 3982465^2 .

It is a cyclic number.

It is not a de Polignac number, because 84001222210049 - 2¹⁶ = 84001222144513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84001222210043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2470624182632 + ... + 2470624182665.

It is an arithmetic number, because the mean of its divisors is an integer number (22235617643841).

Almost surely, 2^{84001222210049} is an apocalyptic number.

It is an amenable number.

84001222210049 is a deficient number, since it is larger than the sum of its proper divisors (4941248365315).

84001222210049 is a wasteful number, since it uses less digits than its factorization.

84001222210049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941248365314.

The product of its (nonzero) digits is 18432, while the sum is 35.

Subtracting 84001222210049 from its reverse (94001222210048), we obtain a palindrome (9999999999999).

The spelling of 84001222210049 in words is "eighty-four trillion, one billion, two hundred twenty-two million, two hundred ten thousand, forty-nine".