200002000121 has 48 divisors (see below), whose sum is σ = 263403819648. Its totient is φ = 147510892800.

The previous prime is 200002000117. The next prime is 200002000127. The reversal of 200002000121 is 121000200002.

It is not a de Polignac number, because 200002000121 - 2² = 200002000117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200002000099 and 200002000108.

It is not an unprimeable number, because it can be changed into a prime (200002000127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39830591 + ... + 39835611.

It is an arithmetic number, because the mean of its divisors is an integer number (5487579576).

Almost surely, 2^200002000121 is an apocalyptic number.

It is an amenable number.

200002000121 is a deficient number, since it is larger than the sum of its proper divisors (63401819527).

200002000121 is a wasteful number, since it uses less digits than its factorization.

200002000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 6491 counting only the distinct ones).

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

Adding to 200002000121 its reverse (121000200002), we get a palindrome (321002200123).

The spelling of 200002000121 in words is "two hundred billion, two million, one hundred twenty-one", and thus it is an aban number.