200131120121 has 2 divisors, whose sum is σ = 200131120122. Its totient is φ = 200131120120.

The previous prime is 200131120117. The next prime is 200131120177. The reversal of 200131120121 is 121021131002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105017476096 + 95113644025 = 324064^2 + 308405^2 .

It is a cyclic number.

It is not a de Polignac number, because 200131120121 - 2² = 200131120117 is a prime.

It is a super-2 number, since 2×200131120121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200131120096 and 200131120105.

It is not a weakly prime, because it can be changed into another prime (200131120621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100065560060 + 100065560061.

It is an arithmetic number, because the mean of its divisors is an integer number (100065560061).

Almost surely, 2^200131120121 is an apocalyptic number.

It is an amenable number.

200131120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200131120121 is an equidigital number, since it uses as much as digits as its factorization.

200131120121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 200131120121 its reverse (121021131002), we get a palindrome (321152251123).

The spelling of 200131120121 in words is "two hundred billion, one hundred thirty-one million, one hundred twenty thousand, one hundred twenty-one".