121022110201221 has 20 divisors (see below), whose sum is σ = 180889245009132. Its totient is φ = 80635381944768.

The previous prime is 121022110201211. The next prime is 121022110201247. The reversal of 121022110201221 is 122102011220121.

121022110201221 is a `hidden beast` number, since 1 + 2 + 10 + 221 + 10 + 201 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2023901724321 + 118998208476900 = 1422639^2 + 10908630^2 .

It is not a de Polignac number, because 121022110201221 - 2¹³ = 121022110193029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022110201194 and 121022110201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022110201211) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 426013206 + ... + 426297191.

Almost surely, 2^{121022110201221} is an apocalyptic number.

It is an amenable number.

121022110201221 is a deficient number, since it is larger than the sum of its proper divisors (59867134807911).

121022110201221 is an equidigital number, since it uses as much as digits as its factorization.

121022110201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852312162 (or 852312153 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121022110201221 its reverse (122102011220121), we get a palindrome (243124121421342).

The spelling of 121022110201221 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred ten million, two hundred one thousand, two hundred twenty-one".