Search a number
-
+
12120120131 = 717131777479
BaseRepresentation
bin10110100100110101…
…00101101101000011
31011021200010220012012
423102122211231003
5144310222321011
65322400123135
7606230215130
oct132232455503
934250126165
1012120120131
11515a545709
1224230064ab
1311b2001322
1482d969587
154ae09ba8b
hex2d26a5b43

12120120131 has 16 divisors (see below), whose sum is σ = 14778339840. Its totient is φ = 9702925440.

The previous prime is 12120120091. The next prime is 12120120161. The reversal of 12120120131 is 13102102121.

12120120131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12120120131 - 218 = 12119857987 is a prime.

It is a super-2 number, since 2×121201201312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120120161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373151 + ... + 404328.

It is an arithmetic number, because the mean of its divisors is an integer number (923646240).

Almost surely, 212120120131 is an apocalyptic number.

12120120131 is a deficient number, since it is larger than the sum of its proper divisors (2658219709).

12120120131 is a wasteful number, since it uses less digits than its factorization.

12120120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777634.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12120120131 its reverse (13102102121), we get a palindrome (25222222252).

The spelling of 12120120131 in words is "twelve billion, one hundred twenty million, one hundred twenty thousand, one hundred thirty-one".

Divisors: 1 7 17 119 131 917 2227 15589 777479 5442353 13217143 92520001 101849749 712948243 1731445733 12120120131