200200100121 has 24 divisors (see below), whose sum is σ = 345016047840. Its totient is φ = 114400056456.

The previous prime is 200200100101. The next prime is 200200100167. The reversal of 200200100121 is 121001002002.

It is not a de Polignac number, because 200200100121 - 2⁶ = 200200100057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (200200100101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75660091 + ... + 75662736.

It is an arithmetic number, because the mean of its divisors is an integer number (14375668660).

Almost surely, 2^200200100121 is an apocalyptic number.

200200100121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200200100121 is a deficient number, since it is larger than the sum of its proper divisors (144815947719).

200200100121 is a wasteful number, since it uses less digits than its factorization.

200200100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151322850 (or 151322837 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 200200100121 its reverse (121001002002), we get a palindrome (321201102123).

The spelling of 200200100121 in words is "two hundred billion, two hundred million, one hundred thousand, one hundred twenty-one".