201122111201221 has 8 divisors (see below), whose sum is σ = 229854005339840. Its totient is φ = 172390258054368.

The previous prime is 201122111201213. The next prime is 201122111201227. The reversal of 201122111201221 is 122102111221102.

It is a happy number.

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 201122111201221 - 2³ = 201122111201213 is a prime.

It is a super-2 number, since 2×201122111201221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122111201227) 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, 1104130 + ... + 20086396.

It is an arithmetic number, because the mean of its divisors is an integer number (28731750667480).

Almost surely, 2^{201122111201221} is an apocalyptic number.

It is an amenable number.

201122111201221 is a deficient number, since it is larger than the sum of its proper divisors (28731894138619).

201122111201221 is a wasteful number, since it uses less digits than its factorization.

201122111201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20495883.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201122111201221 its reverse (122102111221102), we get a palindrome (323224222422323).

The spelling of 201122111201221 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred one thousand, two hundred twenty-one".