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12001351001 = 28657418793
BaseRepresentation
bin10110010110101011…
…00001010101011001
31010222101122210120112
423023111201111121
5144034321213001
65302514334105
7603255541343
oct131325412531
933871583515
1012001351001
1150a94a4702
1223ab28a335
131193518733
1481bc90293
154a393acbb
hex2cb561559

12001351001 has 4 divisors (see below), whose sum is σ = 12001798452. Its totient is φ = 12000903552.

The previous prime is 12001350979. The next prime is 12001351003. The reversal of 12001351001 is 10015310021.

12001351001 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, and also an emirpimes, since its reverse is a distinct semiprime: 10015310021 = 10789928289.

It can be written as a sum of positive squares in 2 ways, for example, as 749445376 + 11251905625 = 27376^2 + 106075^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001351001 - 218 = 12001088857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001351003) 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, 180740 + ... + 238053.

It is an arithmetic number, because the mean of its divisors is an integer number (3000449613).

Almost surely, 212001351001 is an apocalyptic number.

It is an amenable number.

12001351001 is a deficient number, since it is larger than the sum of its proper divisors (447451).

12001351001 is an equidigital number, since it uses as much as digits as its factorization.

12001351001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447450.

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 12001351001 its reverse (10015310021), we get a palindrome (22016661022).

The spelling of 12001351001 in words is "twelve billion, one million, three hundred fifty-one thousand, one".

Divisors: 1 28657 418793 12001351001