121021122120201 has 6 divisors (see below), whose sum is σ = 174808287506970. Its totient is φ = 80680748080128.

The previous prime is 121021122120161. The next prime is 121021122120281. The reversal of 121021122120201 is 102021221120121.

121021122120201 is a `hidden beast` number, since 1 + 2 + 10 + 211 + 221 + 20 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92619470457801 + 28401651662400 = 9623901^2 + 5329320^2 .

It is not a de Polignac number, because 121021122120201 - 2¹¹ = 121021122118153 is a prime.

It is a super-2 number, since 2×121021122120201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121021122120281) 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 5 ways as a sum of consecutive naturals, for example, 6723395673336 + ... + 6723395673353.

It is an arithmetic number, because the mean of its divisors is an integer number (29134714584495).

Almost surely, 2^{121021122120201} is an apocalyptic number.

It is an amenable number.

121021122120201 is a deficient number, since it is larger than the sum of its proper divisors (53787165386769).

121021122120201 is a wasteful number, since it uses less digits than its factorization.

121021122120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446791346695 (or 13446791346692 counting only the distinct ones).

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

Adding to 121021122120201 its reverse (102021221120121), we get a palindrome (223042343240322).

The spelling of 121021122120201 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred one".