221007467447 has 8 divisors (see below), whose sum is σ = 240364558560. Its totient is φ = 201987021600.

The previous prime is 221007467423. The next prime is 221007467467. The reversal of 221007467447 is 744764700122.

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

It is not a de Polignac number, because 221007467447 - 2¹⁸ = 221007205303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221007467398 and 221007467407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221007467467) 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, 84159947 + ... + 84162572.

It is an arithmetic number, because the mean of its divisors is an integer number (30045569820).

Almost surely, 2^221007467447 is an apocalyptic number.

221007467447 is a deficient number, since it is larger than the sum of its proper divisors (19357091113).

221007467447 is a wasteful number, since it uses less digits than its factorization.

221007467447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168322633.

The product of its (nonzero) digits is 526848, while the sum is 44.

The spelling of 221007467447 in words is "two hundred twenty-one billion, seven million, four hundred sixty-seven thousand, four hundred forty-seven".