121113302224221 has 24 divisors (see below), whose sum is σ = 175368365801720. Its totient is φ = 80545205938176.

The previous prime is 121113302224207. The next prime is 121113302224283. The reversal of 121113302224221 is 122422203311121.

121113302224221 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 13 + 3 + 0 + 222 + 422 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 55870930798596 + 65242371425625 = 7474686^2 + 8077275^2 .

It is not a de Polignac number, because 121113302224221 - 2⁹ = 121113302223709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113302224721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27859845 + ... + 31912341.

Almost surely, 2^{121113302224221} is an apocalyptic number.

It is an amenable number.

121113302224221 is a deficient number, since it is larger than the sum of its proper divisors (54255063577499).

121113302224221 is a wasteful number, since it uses less digits than its factorization.

121113302224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060605 (or 4060602 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 121113302224221 its reverse (122422203311121), we get a palindrome (243535505535342).

The spelling of 121113302224221 in words is "one hundred twenty-one trillion, one hundred thirteen billion, three hundred two million, two hundred twenty-four thousand, two hundred twenty-one".