130220321 has 12 divisors (see below), whose sum is σ = 163583616. Its totient is φ = 101469720.

The previous prime is 130220309. The next prime is 130220333. The reversal of 130220321 is 123022031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (130220309) and next prime (130220333).

It is a de Polignac number, because none of the positive numbers 2^k-130220321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130220296 and 130220305.

It is not an unprimeable number, because it can be changed into a prime (130220341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76025 + ... + 77718.

It is an arithmetic number, because the mean of its divisors is an integer number (13631968).

Almost surely, 2^130220321 is an apocalyptic number.

130220321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130220321 is a deficient number, since it is larger than the sum of its proper divisors (33363295).

130220321 is a wasteful number, since it uses less digits than its factorization.

130220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153772 (or 153761 counting only the distinct ones).

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

The square root of 130220321 is about 11411.4118758373. The cubic root of 130220321 is about 506.8657202546.

Adding to 130220321 its reverse (123022031), we get a palindrome (253242352).

The spelling of 130220321 in words is "one hundred thirty million, two hundred twenty thousand, three hundred twenty-one".