130221012221 has 2 divisors, whose sum is σ = 130221012222. Its totient is φ = 130221012220.

The previous prime is 130221012211. The next prime is 130221012223. The reversal of 130221012221 is 122210122031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95860828996 + 34360183225 = 309614^2 + 185365^2 .

It is a cyclic number.

It is not a de Polignac number, because 130221012221 - 2⁶ = 130221012157 is a prime.

Together with 130221012223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130221012221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130221012223) 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, 65110506110 + 65110506111.

It is an arithmetic number, because the mean of its divisors is an integer number (65110506111).

Almost surely, 2^130221012221 is an apocalyptic number.

It is an amenable number.

130221012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

130221012221 is an equidigital number, since it uses as much as digits as its factorization.

130221012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 130221012221 its reverse (122210122031), we get a palindrome (252431134252).

The spelling of 130221012221 in words is "one hundred thirty billion, two hundred twenty-one million, twelve thousand, two hundred twenty-one".