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12123130002 = 237327678379
BaseRepresentation
bin10110100101001100…
…00100100010010010
31011021212210210221220
423102212010202102
5144312010130002
65322544425510
7606264622224
oct132246044222
934255723856
1012123130002
115161211005
122424018296
1311b2816309
14830110414
154ae4937bc
hex2d2984892

12123130002 has 16 divisors (see below), whose sum is σ = 24578401440. Its totient is φ = 3985686432.

The previous prime is 12123130001. The next prime is 12123130027. The reversal of 12123130002 is 20003132121.

It is not an unprimeable number, because it can be changed into a prime (12123130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13838752 + ... + 13839627.

It is an arithmetic number, because the mean of its divisors is an integer number (1536150090).

Almost surely, 212123130002 is an apocalyptic number.

12123130002 is an abundant number, since it is smaller than the sum of its proper divisors (12455271438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123130002 is a wasteful number, since it uses less digits than its factorization.

12123130002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27678457.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12123130002 its reverse (20003132121), we get a palindrome (32126262123).

The spelling of 12123130002 in words is "twelve billion, one hundred twenty-three million, one hundred thirty thousand, two".

Divisors: 1 2 3 6 73 146 219 438 27678379 55356758 83035137 166070274 2020521667 4041043334 6061565001 12123130002