130221223021 has 2 divisors, whose sum is σ = 130221223022. Its totient is φ = 130221223020.

The previous prime is 130221223019. The next prime is 130221223037. The reversal of 130221223021 is 120322122031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91076600521 + 39144622500 = 301789^2 + 197850^2 .

It is a cyclic number.

It is not a de Polignac number, because 130221223021 - 2¹ = 130221223019 is a prime.

It is a super-3 number, since 3×130221223021³ (a number of 34 digits) contains 333 as substring.

Together with 130221223019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 130221223021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130221223081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65110611510 + 65110611511.

It is an arithmetic number, because the mean of its divisors is an integer number (65110611511).

Almost surely, 2^130221223021 is an apocalyptic number.

It is an amenable number.

130221223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130221223021 is an equidigital number, since it uses as much as digits as its factorization.

130221223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 130221223021 its reverse (120322122031), we get a palindrome (250543345052).

The spelling of 130221223021 in words is "one hundred thirty billion, two hundred twenty-one million, two hundred twenty-three thousand, twenty-one".