2221684445247 has 8 divisors (see below), whose sum is σ = 2969087143344. Its totient is φ = 1477702355328.

The previous prime is 2221684445231. The next prime is 2221684445249. The reversal of 2221684445247 is 7425444861222.

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

It is not a de Polignac number, because 2221684445247 - 2⁴ = 2221684445231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221684445247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221684445249) 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, 855150528 + ... + 855153125.

It is an arithmetic number, because the mean of its divisors is an integer number (371135892918).

Almost surely, 2^{2221684445247} is an apocalyptic number.

2221684445247 is a deficient number, since it is larger than the sum of its proper divisors (747402698097).

2221684445247 is a wasteful number, since it uses less digits than its factorization.

2221684445247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710304089.

The product of its digits is 6881280, while the sum is 51.

The spelling of 2221684445247 in words is "two trillion, two hundred twenty-one billion, six hundred eighty-four million, four hundred forty-five thousand, two hundred forty-seven".