221120200201 has 4 divisors (see below), whose sum is σ = 221121164304. Its totient is φ = 221119236100.

The previous prime is 221120200193. The next prime is 221120200219. The reversal of 221120200201 is 102002021122.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102002021122 = 2 ⋅51001010561.

It is a cyclic number.

It is not a de Polignac number, because 221120200201 - 2³ = 221120200193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120200241) 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, 81906 + ... + 670036.

It is an arithmetic number, because the mean of its divisors is an integer number (55280291076).

Almost surely, 2^221120200201 is an apocalyptic number.

It is an amenable number.

221120200201 is a deficient number, since it is larger than the sum of its proper divisors (964103).

221120200201 is an equidigital number, since it uses as much as digits as its factorization.

221120200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964102.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221120200201 its reverse (102002021122), we get a palindrome (323122221323).

The spelling of 221120200201 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred thousand, two hundred one".