130212012521 has 2 divisors, whose sum is σ = 130212012522. Its totient is φ = 130212012520.

The previous prime is 130212012509. The next prime is 130212012529. The reversal of 130212012521 is 125210212031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130180248025 + 31764496 = 360805^2 + 5636^2 .

It is a cyclic number.

It is not a de Polignac number, because 130212012521 - 2¹⁴ = 130211996137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130212012493 and 130212012502.

It is not a weakly prime, because it can be changed into another prime (130212012529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65106006260 + 65106006261.

It is an arithmetic number, because the mean of its divisors is an integer number (65106006261).

Almost surely, 2^130212012521 is an apocalyptic number.

It is an amenable number.

130212012521 is a deficient number, since it is larger than the sum of its proper divisors (1).

130212012521 is an equidigital number, since it uses as much as digits as its factorization.

130212012521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 130212012521 its reverse (125210212031), we get a palindrome (255422224552).

The spelling of 130212012521 in words is "one hundred thirty billion, two hundred twelve million, twelve thousand, five hundred twenty-one".