130220321221 has 4 divisors (see below), whose sum is σ = 130221043200. Its totient is φ = 130219599244.

The previous prime is 130220321191. The next prime is 130220321233. The reversal of 130220321221 is 122123022031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122123022031 = 1019 ⋅119845949.

It is a cyclic number.

It is not a de Polignac number, because 130220321221 - 2²⁷ = 130086103493 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 (130220321821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166050 + ... + 536668.

It is an arithmetic number, because the mean of its divisors is an integer number (32555260800).

Almost surely, 2^130220321221 is an apocalyptic number.

It is an amenable number.

130220321221 is a deficient number, since it is larger than the sum of its proper divisors (721979).

130220321221 is an equidigital number, since it uses as much as digits as its factorization.

130220321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721978.

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

Adding to 130220321221 its reverse (122123022031), we get a palindrome (252343343252).

The spelling of 130220321221 in words is "one hundred thirty billion, two hundred twenty million, three hundred twenty-one thousand, two hundred twenty-one".