200520134121 has 16 divisors (see below), whose sum is σ = 272722754304. Its totient is φ = 131004691584.

The previous prime is 200520134117. The next prime is 200520134159. The reversal of 200520134121 is 121431025002.

It is not a de Polignac number, because 200520134121 - 2² = 200520134117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200520134021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599521 + ... + 872046.

It is an arithmetic number, because the mean of its divisors is an integer number (17045172144).

Almost surely, 2^200520134121 is an apocalyptic number.

It is an amenable number.

200520134121 is a deficient number, since it is larger than the sum of its proper divisors (72202620183).

200520134121 is a wasteful number, since it uses less digits than its factorization.

200520134121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472480.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 200520134121 its reverse (121431025002), we get a palindrome (321951159123).

The spelling of 200520134121 in words is "two hundred billion, five hundred twenty million, one hundred thirty-four thousand, one hundred twenty-one".