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12131110201 = 789109178643
BaseRepresentation
bin10110100110001001…
…00000110100111001
31011022102211020201211
423103010200310321
5144321031011301
65323431443121
7606422510140
oct132304406471
934272736654
1012131110201
115165771711
1224268264a1
1311b437b722
148311ca757
154b001d051
hex2d3120d39

12131110201 has 16 divisors (see below), whose sum is σ = 14148604800. Its totient is φ = 10186881408.

The previous prime is 12131110171. The next prime is 12131110241. The reversal of 12131110201 is 10201113121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12131110201 - 217 = 12130979129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131110241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21415 + ... + 157228.

It is an arithmetic number, because the mean of its divisors is an integer number (884287800).

Almost surely, 212131110201 is an apocalyptic number.

It is an amenable number.

12131110201 is a deficient number, since it is larger than the sum of its proper divisors (2017494599).

12131110201 is a wasteful number, since it uses less digits than its factorization.

12131110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178848.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12131110201 its reverse (10201113121), we get a palindrome (22332223322).

The spelling of 12131110201 in words is "twelve billion, one hundred thirty-one million, one hundred ten thousand, two hundred one".

Divisors: 1 7 89 109 623 763 9701 67907 178643 1250501 15899227 19472087 111294589 136304609 1733015743 12131110201