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130200212221 = 177658836013
BaseRepresentation
bin111100101000010001…
…0011001001011111101
3110110001212200002011021
41321100202121023331
54113122223242341
6135451350224141
712256324354312
oct1712042311375
9413055602137
10130200212221
1150243697582
1221297955051
13c37c5045c1
146431d04d09
1535c07109d1
hex1e508992fd

130200212221 has 4 divisors (see below), whose sum is σ = 137859048252. Its totient is φ = 122541376192.

The previous prime is 130200212179. The next prime is 130200212227. The reversal of 130200212221 is 122212002031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122212002031 = 717458857433.

It can be written as a sum of positive squares in 2 ways, for example, as 98683311321 + 31516900900 = 314139^2 + 177530^2 .

It is a cyclic number.

It is not a de Polignac number, because 130200212221 - 29 = 130200211709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130200212195 and 130200212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130200212227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3829417990 + ... + 3829418023.

It is an arithmetic number, because the mean of its divisors is an integer number (34464762063).

Almost surely, 2130200212221 is an apocalyptic number.

It is an amenable number.

130200212221 is a deficient number, since it is larger than the sum of its proper divisors (7658836031).

130200212221 is an equidigital number, since it uses as much as digits as its factorization.

130200212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658836030.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 130200212221 its reverse (122212002031), we get a palindrome (252412214252).

The spelling of 130200212221 in words is "one hundred thirty billion, two hundred million, two hundred twelve thousand, two hundred twenty-one".

Divisors: 1 17 7658836013 130200212221