221043017163 has 16 divisors (see below), whose sum is σ = 302846421536. Its totient is φ = 143304940800.

The previous prime is 221043017137. The next prime is 221043017197. The reversal of 221043017163 is 361710340122.

It is a happy number.

It is not a de Polignac number, because 221043017163 - 2¹³ = 221043008971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221043017163.

It is not an unprimeable number, because it can be changed into a prime (221043015163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300538 + ... + 729663.

It is an arithmetic number, because the mean of its divisors is an integer number (18927901346).

Almost surely, 2^221043017163 is an apocalyptic number.

221043017163 is a deficient number, since it is larger than the sum of its proper divisors (81803404373).

221043017163 is a wasteful number, since it uses less digits than its factorization.

221043017163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032174.

The product of its (nonzero) digits is 6048, while the sum is 30.

Adding to 221043017163 its reverse (361710340122), we get a palindrome (582753357285).

The spelling of 221043017163 in words is "two hundred twenty-one billion, forty-three million, seventeen thousand, one hundred sixty-three".