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12012103131248 = 241168250585973
BaseRepresentation
bin1010111011001100100100…
…1000111110000001110000
31120112100100010020212121202
42232303021020332001300
53033301241400144443
641314141202110332
72346563053642313
oct256631110760160
946470303225552
1012012103131248
113911339076510
12142003904b3a8
136919760231cc
142d75631a497a
1515c6e07637b8
hexaecc923e070

12012103131248 has 20 divisors (see below), whose sum is σ = 25389217982328. Its totient is φ = 5460046877760.

The previous prime is 12012103131247. The next prime is 12012103131253. The reversal of 12012103131248 is 84213130121021.

It is a self number, because there is not a number n which added to its sum of digits gives 12012103131248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012103131247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34125292811 + ... + 34125293162.

Almost surely, 212012103131248 is an apocalyptic number.

It is an amenable number.

12012103131248 is an abundant number, since it is smaller than the sum of its proper divisors (13377114851080).

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

12012103131248 is a wasteful number, since it uses less digits than its factorization.

12012103131248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68250585992 (or 68250585986 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 12012103131248 its reverse (84213130121021), we get a palindrome (96225233252269).

The spelling of 12012103131248 in words is "twelve trillion, twelve billion, one hundred three million, one hundred thirty-one thousand, two hundred forty-eight".

Divisors: 1 2 4 8 11 16 22 44 88 176 68250585973 136501171946 273002343892 546004687784 750756445703 1092009375568 1501512891406 3003025782812 6006051565624 12012103131248