Search a number
-
+
12110323021 = 31489384589
BaseRepresentation
bin10110100011101010…
…01101110101001101
31011020222201011002021
423101311031311031
5144300220314041
65321410130141
7606051022126
oct132165156515
934228634067
1012110323021
115154a63a25
12241b880951
1311acc80c14
1482c53904d
154ad2b3cd1
hex2d1d4dd4d

12110323021 has 4 divisors (see below), whose sum is σ = 12110739100. Its totient is φ = 12109906944.

The previous prime is 12110322989. The next prime is 12110323039. The reversal of 12110323021 is 12032301121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12032301121 = 23523143527.

It can be written as a sum of positive squares in 2 ways, for example, as 2276625796 + 9833697225 = 47714^2 + 99165^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110323021 - 25 = 12110322989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110322986 and 12110323004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110323921) 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, 160806 + ... + 223783.

It is an arithmetic number, because the mean of its divisors is an integer number (3027684775).

Almost surely, 212110323021 is an apocalyptic number.

It is an amenable number.

12110323021 is a deficient number, since it is larger than the sum of its proper divisors (416079).

12110323021 is an equidigital number, since it uses as much as digits as its factorization.

12110323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416078.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12110323021 its reverse (12032301121), we get a palindrome (24142624142).

The spelling of 12110323021 in words is "twelve billion, one hundred ten million, three hundred twenty-three thousand, twenty-one".

Divisors: 1 31489 384589 12110323021