201122001212221 has 8 divisors (see below), whose sum is σ = 201459253296384. Its totient is φ = 200784778958160.

The previous prime is 201122001212201. The next prime is 201122001212239. The reversal of 201122001212221 is 122212100221102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201122001212221 - 2¹¹ = 201122001210173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122001212201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6058800 + ... + 20951206.

It is an arithmetic number, because the mean of its divisors is an integer number (25182406662048).

Almost surely, 2^{201122001212221} is an apocalyptic number.

It is an amenable number.

201122001212221 is a deficient number, since it is larger than the sum of its proper divisors (337252084163).

201122001212221 is a wasteful number, since it uses less digits than its factorization.

201122001212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915051.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201122001212221 its reverse (122212100221102), we get a palindrome (323334101433323).

The spelling of 201122001212221 in words is "two hundred one trillion, one hundred twenty-two billion, one million, two hundred twelve thousand, two hundred twenty-one".