121112133020221 has 16 divisors (see below), whose sum is σ = 139872393239040. Its totient is φ = 102721071950640.

The previous prime is 121112133020213. The next prime is 121112133020227. The reversal of 121112133020221 is 122020331211121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121112133020221 - 2³ = 121112133020213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121112133020192 and 121112133020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112133020227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189990591 + ... + 190626988.

It is an arithmetic number, because the mean of its divisors is an integer number (8742024577440).

Almost surely, 2^{121112133020221} is an apocalyptic number.

It is an amenable number.

121112133020221 is a deficient number, since it is larger than the sum of its proper divisors (18760260218819).

121112133020221 is a wasteful number, since it uses less digits than its factorization.

121112133020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380618064.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 121112133020221 its reverse (122020331211121), we get a palindrome (243132464231342).

The spelling of 121112133020221 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred thirty-three million, twenty thousand, two hundred twenty-one".