201222221120201 has 4 divisors (see below), whose sum is σ = 201346971413892. Its totient is φ = 201097470826512.

The previous prime is 201222221120159. The next prime is 201222221120209. The reversal of 201222221120201 is 102021122222102.

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 155785845216400 + 45436375903801 = 12481420^2 + 6740651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201222221120201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201222221120209) 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, 62375144426 + ... + 62375147651.

It is an arithmetic number, because the mean of its divisors is an integer number (50336742853473).

Almost surely, 2^{201222221120201} is an apocalyptic number.

It is an amenable number.

201222221120201 is a deficient number, since it is larger than the sum of its proper divisors (124750293691).

201222221120201 is a wasteful number, since it uses less digits than its factorization.

201222221120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124750293690.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201222221120201 its reverse (102021122222102), we get a palindrome (303243343342303).

The spelling of 201222221120201 in words is "two hundred one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, two hundred one".