130200121 has 2 divisors, whose sum is σ = 130200122. Its totient is φ = 130200120.

The previous prime is 130200113. The next prime is 130200131. The reversal of 130200121 is 121002031.

It is an a-pointer prime, because the next prime (130200131) can be obtained adding 130200121 to its sum of digits (10).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96432400 + 33767721 = 9820^2 + 5811^2 .

It is a cyclic number.

It is not a de Polignac number, because 130200121 - 2³ = 130200113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130200098 and 130200107.

It is not a weakly prime, because it can be changed into another prime (130200131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65100060 + 65100061.

It is an arithmetic number, because the mean of its divisors is an integer number (65100061).

Almost surely, 2^130200121 is an apocalyptic number.

It is an amenable number.

130200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

130200121 is an equidigital number, since it uses as much as digits as its factorization.

130200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 130200121 is about 11410.5267625995. The cubic root of 130200121 is about 506.8395102721.

Adding to 130200121 its reverse (121002031), we get a palindrome (251202152).

It can be divided in two parts, 130200 and 121, that added together give a 4-th power (130321 = 19⁴).

The spelling of 130200121 in words is "one hundred thirty million, two hundred thousand, one hundred twenty-one".