201222121212201 has 4 divisors (see below), whose sum is σ = 268296161616272. Its totient is φ = 134148080808132.

The previous prime is 201222121212199. The next prime is 201222121212271. The reversal of 201222121212201 is 102212121222102.

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 not a de Polignac number, because 201222121212201 - 2¹ = 201222121212199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201222121212271) 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, 33537020202031 + ... + 33537020202036.

It is an arithmetic number, because the mean of its divisors is an integer number (67074040404068).

Almost surely, 2^{201222121212201} is an apocalyptic number.

It is an amenable number.

201222121212201 is a deficient number, since it is larger than the sum of its proper divisors (67074040404071).

201222121212201 is an equidigital number, since it uses as much as digits as its factorization.

201222121212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67074040404070.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201222121212201 its reverse (102212121222102), we get a palindrome (303434242434303).

Subtracting from 201222121212201 its reverse (102212121222102), we obtain a palindrome (99009999990099).

It can be divided in two parts, 20 and 1222121212201, that added together give a palindrome (1222121212221).

The spelling of 201222121212201 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, two hundred one".