221201120002201 has 4 divisors (see below), whose sum is σ = 228336640002304. Its totient is φ = 214065600002100.

The previous prime is 221201120002193. The next prime is 221201120002223. The reversal of 221201120002201 is 102200021102122.

It is a happy number.

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 not a de Polignac number, because 221201120002201 - 2³ = 221201120002193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201120002501) 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, 3567760000005 + ... + 3567760000066.

It is an arithmetic number, because the mean of its divisors is an integer number (57084160000576).

Almost surely, 2^{221201120002201} is an apocalyptic number.

It is an amenable number.

221201120002201 is a deficient number, since it is larger than the sum of its proper divisors (7135520000103).

221201120002201 is an equidigital number, since it uses as much as digits as its factorization.

221201120002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7135520000102.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221201120002201 its reverse (102200021102122), we get a palindrome (323401141104323).

The spelling of 221201120002201 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred twenty million, two thousand, two hundred one".