121002122020201 has 2 divisors, whose sum is σ = 121002122020202. Its totient is φ = 121002122020200.

The previous prime is 121002122020187. The next prime is 121002122020207. The reversal of 121002122020201 is 102020221200121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85321522411225 + 35680599608976 = 9236965^2 + 5973324^2 .

It is a cyclic number.

It is not a de Polignac number, because 121002122020201 - 2³³ = 120993532085609 is a prime.

It is a super-2 number, since 2×121002122020201² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121002122020207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501061010100 + 60501061010101.

It is an arithmetic number, because the mean of its divisors is an integer number (60501061010101).

Almost surely, 2^{121002122020201} is an apocalyptic number.

It is an amenable number.

121002122020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121002122020201 is an equidigital number, since it uses as much as digits as its factorization.

121002122020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121002122020201 its reverse (102020221200121), we get a palindrome (223022343220322).

The spelling of 121002122020201 in words is "one hundred twenty-one trillion, two billion, one hundred twenty-two million, twenty thousand, two hundred one".