221730050592 has 126 divisors (see below), whose sum is σ = 654709512807. Its totient is φ = 73886043456.

The previous prime is 221730050573. The next prime is 221730050593. The reversal of 221730050592 is 295050037122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

221730050592 is a `hidden beast` number, since 2 + 2 + 17 + 3 + 0 + 0 + 50 + 592 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110865025296 + 110865025296 = 332964^2 + 332964^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332964.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (221730050593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 71918683 + ... + 71921765.

Almost surely, 2^221730050592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221730050592

221730050592 is an abundant number, since it is smaller than the sum of its proper divisors (432979462215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221730050592 is an frugal number, since it uses more digits than its factorization.

221730050592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6194 (or 3088 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 221730050592 in words is "two hundred twenty-one billion, seven hundred thirty million, fifty thousand, five hundred ninety-two".