130221000 has 512 divisors, whose sum is σ = 566092800. Its totient is φ = 26956800.

The previous prime is 130220983. The next prime is 130221001. The reversal of 130221000 is 122031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130221001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2456974 + ... + 2457026.

It is an arithmetic number, because the mean of its divisors is an integer number (1105650).

Almost surely, 2^130221000 is an apocalyptic number.

130221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283046400).

130221000 is an abundant number, since it is smaller than the sum of its proper divisors (435871800).

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

130221000 is a wasteful number, since it uses less digits than its factorization.

130221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 130221000 is about 11411.4416267183. The cubic root of 130221000 is about 506.8666012263.

Adding to 130221000 its reverse (122031), we get a palindrome (130343031).

The spelling of 130221000 in words is "one hundred thirty million, two hundred twenty-one thousand".