221332111201 has 4 divisors (see below), whose sum is σ = 234351647172. Its totient is φ = 208312575232.

The previous prime is 221332111153. The next prime is 221332111207. The reversal of 221332111201 is 102111233122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91264410000 + 130067701201 = 302100^2 + 360649^2 .

It is not a de Polignac number, because 221332111201 - 2²³ = 221323722593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221332111207) 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, 6509767960 + ... + 6509767993.

It is an arithmetic number, because the mean of its divisors is an integer number (58587911793).

Almost surely, 2^221332111201 is an apocalyptic number.

It is an amenable number.

221332111201 is a deficient number, since it is larger than the sum of its proper divisors (13019535971).

221332111201 is a wasteful number, since it uses less digits than its factorization.

221332111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019535970.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221332111201 its reverse (102111233122), we get a palindrome (323443344323).

The spelling of 221332111201 in words is "two hundred twenty-one billion, three hundred thirty-two million, one hundred eleven thousand, two hundred one".