200131321121 has 4 divisors (see below), whose sum is σ = 201474484500. Its totient is φ = 198788157744.

The previous prime is 200131321111. The next prime is 200131321123. The reversal of 200131321121 is 121123131002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56064768400 + 144066552721 = 236780^2 + 379561^2 .

It is a cyclic number.

It is not a de Polignac number, because 200131321121 - 2³⁰ = 199057579297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200131321121.

It is not an unprimeable number, because it can be changed into a prime (200131321123) 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 3 ways as a sum of consecutive naturals, for example, 671581466 + ... + 671581763.

It is an arithmetic number, because the mean of its divisors is an integer number (50368621125).

Almost surely, 2^200131321121 is an apocalyptic number.

It is an amenable number.

200131321121 is a deficient number, since it is larger than the sum of its proper divisors (1343163379).

200131321121 is a wasteful number, since it uses less digits than its factorization.

200131321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343163378.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 200131321121 its reverse (121123131002), we get a palindrome (321254452123).

The spelling of 200131321121 in words is "two hundred billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-one".