130221320 has 32 divisors (see below), whose sum is σ = 295908120. Its totient is φ = 51571200.

The previous prime is 130221277. The next prime is 130221341. The reversal of 130221320 is 23122031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 129914404 + 306916 = 11398^2 + 554^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130221295 and 130221304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12077 + ... + 20156.

Almost surely, 2^130221320 is an apocalyptic number.

130221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130221320 is an abundant number, since it is smaller than the sum of its proper divisors (165686800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130221320 is a wasteful number, since it uses less digits than its factorization.

130221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32345 (or 32341 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 130221320 is about 11411.4556477252. The cubic root of 130221320 is about 506.8670164106.

Adding to 130221320 its reverse (23122031), we get a palindrome (153343351).

It can be divided in two parts, 1302 and 21320, that added together give a palindrome (22622).

The spelling of 130221320 in words is "one hundred thirty million, two hundred twenty-one thousand, three hundred twenty".