130221450 has 36 divisors (see below), whose sum is σ = 349862838. Its totient is φ = 34725600.

The previous prime is 130221431. The next prime is 130221451. The reversal of 130221450 is 54122031.

It can be written as a sum of positive squares in 3 ways, for example, as 121418361 + 8803089 = 11019^2 + 2967^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (130221451) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 144241 + ... + 145140.

Almost surely, 2^130221450 is an apocalyptic number.

130221450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130221450 is an abundant number, since it is smaller than the sum of its proper divisors (219641388).

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

130221450 is a wasteful number, since it uses less digits than its factorization.

130221450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289399 (or 289391 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 130221450 is about 11411.4613437544. The cubic root of 130221450 is about 506.8671850791.

Adding to 130221450 its reverse (54122031), we get a palindrome (184343481).

The spelling of 130221450 in words is "one hundred thirty million, two hundred twenty-one thousand, four hundred fifty".