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12122310425 = 522321082279
BaseRepresentation
bin10110100101000101…
…11100011100011001
31011021211021011201012
423102202330130121
5144311302413200
65322515103305
7606254636621
oct132242743431
934254234635
1012122310425
115160801275
1224238a1b35
1311b25ba264
1482dd79881
154ae380a35
hex2d28bc719

12122310425 has 12 divisors (see below), whose sum is σ = 15685216320. Its totient is φ = 9276202320.

The previous prime is 12122310391. The next prime is 12122310427. The reversal of 12122310425 is 52401322121.

12122310425 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 12122310425 - 232 = 7827343129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 12122310425.

It is not an unprimeable number, because it can be changed into a prime (12122310427) 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 11 ways as a sum of consecutive naturals, for example, 10540565 + ... + 10541714.

It is an arithmetic number, because the mean of its divisors is an integer number (1307101360).

Almost surely, 212122310425 is an apocalyptic number.

It is an amenable number.

12122310425 is a deficient number, since it is larger than the sum of its proper divisors (3562905895).

12122310425 is a wasteful number, since it uses less digits than its factorization.

12122310425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21082312 (or 21082307 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 12122310425 its reverse (52401322121), we get a palindrome (64523632546).

The spelling of 12122310425 in words is "twelve billion, one hundred twenty-two million, three hundred ten thousand, four hundred twenty-five".

Divisors: 1 5 23 25 115 575 21082279 105411395 484892417 527056975 2424462085 12122310425