202000000121 has 16 divisors (see below), whose sum is σ = 210534764544. Its totient is φ = 193654004544.

The previous prime is 202000000093. The next prime is 202000000157. The reversal of 202000000121 is 121000000202.

It is a cyclic number.

It is not a de Polignac number, because 202000000121 - 2³⁰ = 200926258297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202000000099 and 202000000108.

It is not an unprimeable number, because it can be changed into a prime (202000000171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1460840 + ... + 1593126.

It is an arithmetic number, because the mean of its divisors is an integer number (13158422784).

Almost surely, 2^202000000121 is an apocalyptic number.

It is an amenable number.

202000000121 is a deficient number, since it is larger than the sum of its proper divisors (8534764423).

202000000121 is a wasteful number, since it uses less digits than its factorization.

202000000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133000.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 202000000121 its reverse (121000000202), we get a palindrome (323000000323).

The spelling of 202000000121 in words is "two hundred two billion, one hundred twenty-one", and thus it is an aban number.