130321212121 has 2 divisors, whose sum is σ = 130321212122. Its totient is φ = 130321212120.

The previous prime is 130321212089. The next prime is 130321212143. The reversal of 130321212121 is 121212123031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128217705625 + 2103506496 = 358075^2 + 45864^2 .

It is a cyclic number.

It is not a de Polignac number, because 130321212121 - 2⁵ = 130321212089 is a prime.

It is not a weakly prime, because it can be changed into another prime (130321012121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65160606060 + 65160606061.

It is an arithmetic number, because the mean of its divisors is an integer number (65160606061).

Almost surely, 2^130321212121 is an apocalyptic number.

It is an amenable number.

130321212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

130321212121 is an equidigital number, since it uses as much as digits as its factorization.

130321212121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 130321212121 its reverse (121212123031), we get a palindrome (251533335152).

The spelling of 130321212121 in words is "one hundred thirty billion, three hundred twenty-one million, two hundred twelve thousand, one hundred twenty-one".