21222584673647 has 8 divisors (see below), whose sum is σ = 24360296820000. Its totient is φ = 18111351111264.

The previous prime is 21222584673611. The next prime is 21222584673721. The reversal of 21222584673647 is 74637648522212.

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 21222584673647 - 2¹⁰ = 21222584672623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222584643647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6619644272 + ... + 6619647477.

It is an arithmetic number, because the mean of its divisors is an integer number (3045037102500).

Almost surely, 2^{21222584673647} is an apocalyptic number.

21222584673647 is a deficient number, since it is larger than the sum of its proper divisors (3137712146353).

21222584673647 is a wasteful number, since it uses less digits than its factorization.

21222584673647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239291985.

The product of its digits is 54190080, while the sum is 59.

The spelling of 21222584673647 in words is "twenty-one trillion, two hundred twenty-two billion, five hundred eighty-four million, six hundred seventy-three thousand, six hundred forty-seven".