201122212022121 has 16 divisors (see below), whose sum is σ = 288795338395200. Its totient is φ = 123765599440320.

The previous prime is 201122212022089. The next prime is 201122212022159. The reversal of 201122212022121 is 121220212221102.

It is not a de Polignac number, because 201122212022121 - 2⁵ = 201122212022089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201122212022321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37355271 + ... + 42398828.

It is an arithmetic number, because the mean of its divisors is an integer number (18049708649700).

Almost surely, 2^{201122212022121} is an apocalyptic number.

It is an amenable number.

201122212022121 is a deficient number, since it is larger than the sum of its proper divisors (87673126373079).

201122212022121 is a wasteful number, since it uses less digits than its factorization.

201122212022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79818776.

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

Adding to 201122212022121 its reverse (121220212221102), we get a palindrome (322342424243223).

The spelling of 201122212022121 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred twelve million, twenty-two thousand, one hundred twenty-one".