130221203221 has 6 divisors (see below), whose sum is σ = 130314560150. Its totient is φ = 130127913096.

The previous prime is 130221203131. The next prime is 130221203257. The reversal of 130221203221 is 122302122031.

It can be written as a sum of positive squares in only one way, i.e., 120243191121 + 9978012100 = 346761^2 + 99890^2 .

It is not a de Polignac number, because 130221203221 - 2⁷ = 130221203093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130221203261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2004355 + ... + 2068303.

Almost surely, 2^130221203221 is an apocalyptic number.

It is an amenable number.

130221203221 is a deficient number, since it is larger than the sum of its proper divisors (93356929).

130221203221 is an frugal number, since it uses more digits than its factorization.

130221203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66803 (or 65376 counting only the distinct ones).

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

Adding to 130221203221 its reverse (122302122031), we get a palindrome (252523325252).

The spelling of 130221203221 in words is "one hundred thirty billion, two hundred twenty-one million, two hundred three thousand, two hundred twenty-one".