202021201121 has 2 divisors, whose sum is σ = 202021201122. Its totient is φ = 202021201120.

The previous prime is 202021201111. The next prime is 202021201133. The reversal of 202021201121 is 121102120202.

202021201121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105712768225 + 96308432896 = 325135^2 + 310336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202021201121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202021201096 and 202021201105.

It is not a weakly prime, because it can be changed into another prime (202021201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010600560 + 101010600561.

It is an arithmetic number, because the mean of its divisors is an integer number (101010600561).

Almost surely, 2^202021201121 is an apocalyptic number.

It is an amenable number.

202021201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021201121 is an equidigital number, since it uses as much as digits as its factorization.

202021201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202021201121 its reverse (121102120202), we get a palindrome (323123321323).

The spelling of 202021201121 in words is "two hundred two billion, twenty-one million, two hundred one thousand, one hundred twenty-one".