Search a number
-
+
120230312221 = 5312917175621
BaseRepresentation
bin110111111111001001…
…0001111100100011101
3102111100001112200110201
41233332102033210131
53432212424442341
6131122200503501
711454263535415
oct1577622174435
9374301480421
10120230312221
1146a979710a8
121b374a7ab91
13b450b257a6
145b67b79645
1531da2eb331
hex1bfe48f91d

120230312221 has 8 divisors (see below), whose sum is σ = 122508989784. Its totient is φ = 117952011840.

The previous prime is 120230312207. The next prime is 120230312243. The reversal of 120230312221 is 122213032021.

It can be written as a sum of positive squares in 4 ways, for example, as 57987048025 + 62243264196 = 240805^2 + 249486^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120230312221 - 215 = 120230279453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120230316221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596791 + ... + 772411.

It is an arithmetic number, because the mean of its divisors is an integer number (15313623723).

Almost surely, 2120230312221 is an apocalyptic number.

It is an amenable number.

120230312221 is a deficient number, since it is larger than the sum of its proper divisors (2278677563).

120230312221 is a wasteful number, since it uses less digits than its factorization.

120230312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188591.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 120230312221 its reverse (122213032021), we get a palindrome (242443344242).

The spelling of 120230312221 in words is "one hundred twenty billion, two hundred thirty million, three hundred twelve thousand, two hundred twenty-one".

Divisors: 1 53 12917 175621 684601 9307913 2268496457 120230312221