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12202105 = 52440421
BaseRepresentation
bin101110100011…
…000001111001
3211221221010211
4232203001321
511110431410
61113311121
7205500436
oct56430171
924857124
1012202105
116984693
1241054a1
1326b2ca6
141898b8d
15111068a
hexba3079

12202105 has 4 divisors (see below), whose sum is σ = 14642532. Its totient is φ = 9761680.

The previous prime is 12202097. The next prime is 12202117. The reversal of 12202105 is 50120221.

12202105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6985449 + 5216656 = 2643^2 + 2284^2 .

It is not a de Polignac number, because 12202105 - 23 = 12202097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220206 + ... + 1220215.

It is an arithmetic number, because the mean of its divisors is an integer number (3660633).

Almost surely, 212202105 is an apocalyptic number.

It is an amenable number.

12202105 is a deficient number, since it is larger than the sum of its proper divisors (2440427).

12202105 is an equidigital number, since it uses as much as digits as its factorization.

12202105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440426.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 12202105 is about 3493.1511561912. The cubic root of 12202105 is about 230.2209911255.

Adding to 12202105 its reverse (50120221), we get a palindrome (62322326).

The spelling of 12202105 in words is "twelve million, two hundred two thousand, one hundred five".

Divisors: 1 5 2440421 12202105