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12130122131 = 13997866623
BaseRepresentation
bin10110100110000001…
…01111100110010011
31011022100222001100122
423103000233212103
5144320302402011
65323354340455
7606411223361
oct132300574623
934270861318
1012130122131
115165157326
12242642a72b
1311b40c3a7a
14831010631
154aedc53db
hex2d302f993

12130122131 has 4 divisors (see below), whose sum is σ = 12131002752. Its totient is φ = 12129241512.

The previous prime is 12130122113. The next prime is 12130122167. The reversal of 12130122131 is 13122103121.

12130122131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12130122131 - 226 = 12063013267 is a prime.

It is a super-2 number, since 2×121301221312 (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 (12130122181) 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 3 ways as a sum of consecutive naturals, for example, 419315 + ... + 447308.

It is an arithmetic number, because the mean of its divisors is an integer number (3032750688).

Almost surely, 212130122131 is an apocalyptic number.

12130122131 is a deficient number, since it is larger than the sum of its proper divisors (880621).

12130122131 is an equidigital number, since it uses as much as digits as its factorization.

12130122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880620.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12130122131 its reverse (13122103121), we get a palindrome (25252225252).

The spelling of 12130122131 in words is "twelve billion, one hundred thirty million, one hundred twenty-two thousand, one hundred thirty-one".

Divisors: 1 13997 866623 12130122131