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12300121 = 12839587
BaseRepresentation
bin101110111010…
…111101011001
3212010220121001
4232322331121
511122100441
61115345001
7206356261
oct56727531
925126531
1012300121
116a41299
124152161
1327187a2
1418c27a1
15112e731
hexbbaf59

12300121 has 4 divisors (see below), whose sum is σ = 12310992. Its totient is φ = 12289252.

The previous prime is 12300103. The next prime is 12300131. The reversal of 12300121 is 12100321.

12300121 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12300121 - 219 = 11775833 is a prime.

It is a super-2 number, since 2×123001212 = 302585953229282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12300098 and 12300107.

It is not an unprimeable number, because it can be changed into a prime (12300131) 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, 3511 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (3077748).

Almost surely, 212300121 is an apocalyptic number.

It is an amenable number.

12300121 is a deficient number, since it is larger than the sum of its proper divisors (10871).

12300121 is an equidigital number, since it uses as much as digits as its factorization.

12300121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10870.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12300121 is about 3507.1528338526. The cubic root of 12300121 is about 230.8357809116.

Adding to 12300121 its reverse (12100321), we get a palindrome (24400442).

It can be divided in two parts, 12300 and 121, that added together give a palindrome (12421).

The spelling of 12300121 in words is "twelve million, three hundred thousand, one hundred twenty-one".

Divisors: 1 1283 9587 12300121