221332322201 has 4 divisors (see below), whose sum is σ = 226479585552. Its totient is φ = 216185058852.

The previous prime is 221332322173. The next prime is 221332322207. The reversal of 221332322201 is 102223233122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221332322201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221332322207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2573631611 + ... + 2573631696.

It is an arithmetic number, because the mean of its divisors is an integer number (56619896388).

Almost surely, 2^221332322201 is an apocalyptic number.

It is an amenable number.

221332322201 is a deficient number, since it is larger than the sum of its proper divisors (5147263351).

221332322201 is an equidigital number, since it uses as much as digits as its factorization.

221332322201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147263350.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221332322201 its reverse (102223233122), we get a palindrome (323555555323).

The spelling of 221332322201 in words is "two hundred twenty-one billion, three hundred thirty-two million, three hundred twenty-two thousand, two hundred one".