130221420 has 72 divisors (see below), whose sum is σ = 424159344. Its totient is φ = 29764224.

The previous prime is 130221409. The next prime is 130221431. The reversal of 130221420 is 24122031.

It is an interprime number because it is at equal distance from previous prime (130221409) and next prime (130221431).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 130221420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19207 + ... + 25086.

It is an arithmetic number, because the mean of its divisors is an integer number (5891102).

Almost surely, 2^130221420 is an apocalyptic number.

130221420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130221420 is an abundant number, since it is smaller than the sum of its proper divisors (293937924).

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

130221420 is a wasteful number, since it uses less digits than its factorization.

130221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44319 (or 44310 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 130221420 is about 11411.4600292863. The cubic root of 130221420 is about 506.8671461556.

Adding to 130221420 its reverse (24122031), we get a palindrome (154343451).

It can be divided in two parts, 1302 and 21420, that added together give a palindrome (22722).

The spelling of 130221420 in words is "one hundred thirty million, two hundred twenty-one thousand, four hundred twenty".