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130221230120 = 23517191501809
BaseRepresentation
bin111100101000111001…
…0100100100000101000
3110110010100012220021222
41321101302210200220
54113143113330440
6135453420521212
712260001123062
oct1712162444050
9413110186258
10130221230120
1150254542643
12212a29b0208
13c383983127
146434a16732
1535c24b32b5
hex1e51ca4828

130221230120 has 32 divisors (see below), whose sum is σ = 310232932200. Its totient is φ = 49024462848.

The previous prime is 130221230023. The next prime is 130221230123. The reversal of 130221230120 is 21032122031.

It can be written as a sum of positive squares in 4 ways, for example, as 104376809476 + 25844420644 = 323074^2 + 160762^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (130221230123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95750225 + ... + 95751584.

Almost surely, 2130221230120 is an apocalyptic number.

130221230120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130221230120 is an abundant number, since it is smaller than the sum of its proper divisors (180011702080).

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

130221230120 is a wasteful number, since it uses less digits than its factorization.

130221230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191501837 (or 191501833 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 130221230120 its reverse (21032122031), we get a palindrome (151253352151).

The spelling of 130221230120 in words is "one hundred thirty billion, two hundred twenty-one million, two hundred thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 191501809 383003618 766007236 957509045 1532014472 1915018090 3255530753 3830036180 6511061506 7660072360 13022123012 16277653765 26044246024 32555307530 65110615060 130221230120