221000221200201 has 4 divisors (see below), whose sum is σ = 294666961600272. Its totient is φ = 147333480800132.

The previous prime is 221000221200197. The next prime is 221000221200203. The reversal of 221000221200201 is 102002122000122.

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 221000221200201 - 2² = 221000221200197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221000221200203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36833370200031 + ... + 36833370200036.

It is an arithmetic number, because the mean of its divisors is an integer number (73666740400068).

Almost surely, 2^{221000221200201} is an apocalyptic number.

It is an amenable number.

221000221200201 is a deficient number, since it is larger than the sum of its proper divisors (73666740400071).

221000221200201 is an equidigital number, since it uses as much as digits as its factorization.

221000221200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73666740400070.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221000221200201 its reverse (102002122000122), we get a palindrome (323002343200323).

The spelling of 221000221200201 in words is "two hundred twenty-one trillion, two hundred twenty-one million, two hundred thousand, two hundred one".