221543512201 has 8 divisors (see below), whose sum is σ = 241756689600. Its totient is φ = 201342477840.

The previous prime is 221543512199. The next prime is 221543512213. The reversal of 221543512201 is 102215345122.

It is a happy number.

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 221543512201 - 2¹ = 221543512199 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 221543512201.

It is not an unprimeable number, because it can be changed into a prime (221543512901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2997586 + ... + 3070603.

It is an arithmetic number, because the mean of its divisors is an integer number (30219586200).

Almost surely, 2^221543512201 is an apocalyptic number.

It is an amenable number.

221543512201 is a deficient number, since it is larger than the sum of its proper divisors (20213177399).

221543512201 is a wasteful number, since it uses less digits than its factorization.

221543512201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071519.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 221543512201 its reverse (102215345122), we get a palindrome (323758857323).

The spelling of 221543512201 in words is "two hundred twenty-one billion, five hundred forty-three million, five hundred twelve thousand, two hundred one".