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12120202112202 = 23474816062421
BaseRepresentation
bin1011000001011111010001…
…0101110110110011001010
31120220200100201120002010000
42300113310111312303022
53042034133220042302
641435535522303430
72360440623060222
oct260276425666312
946820321502100
1012120202112202
1139531701348a8
121438b871b7b76
1369bc12720772
142dc899ad7082
1516041a9eb31c
hexb05f4576cca

12120202112202 has 20 divisors (see below), whose sum is σ = 27158230659186. Its totient is φ = 4040067370680.

The previous prime is 12120202112177. The next prime is 12120202112279. The reversal of 12120202112202 is 20221120202121.

It is a happy number.

12120202112202 is a `hidden beast` number, since 1 + 212 + 0 + 20 + 211 + 220 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7714900660041 + 4405301452161 = 2777571^2 + 2098881^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37408031049 + ... + 37408031372.

Almost surely, 212120202112202 is an apocalyptic number.

12120202112202 is an abundant number, since it is smaller than the sum of its proper divisors (15038028546984).

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

12120202112202 is an equidigital number, since it uses as much as digits as its factorization.

12120202112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74816062435 (or 74816062426 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12120202112202 its reverse (20221120202121), we get a palindrome (32341322314323).

The spelling of 12120202112202 in words is "twelve trillion, one hundred twenty billion, two hundred two million, one hundred twelve thousand, two hundred two".

Divisors: 1 2 3 6 9 18 27 54 81 162 74816062421 149632124842 224448187263 448896374526 673344561789 1346689123578 2020033685367 4040067370734 6060101056101 12120202112202