Search a number
-
+
12011001 = 34003667
BaseRepresentation
bin101101110100…
…010111111001
3211121012222220
4231310113321
511033323001
61105234253
7204043332
oct55642771
924535886
1012011001
116864052
124032989
132647002
141849289
1510c3c36
hexb745f9

12011001 has 4 divisors (see below), whose sum is σ = 16014672. Its totient is φ = 8007332.

The previous prime is 12010963. The next prime is 12011009. The reversal of 12011001 is 10011021.

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 an emirpimes, since its reverse is a distinct semiprime: 10011021 = 33337007.

It is a cyclic number.

It is not a de Polignac number, because 12011001 - 26 = 12010937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011009) 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, 2001831 + ... + 2001836.

It is an arithmetic number, because the mean of its divisors is an integer number (4003668).

Almost surely, 212011001 is an apocalyptic number.

It is an amenable number.

12011001 is a deficient number, since it is larger than the sum of its proper divisors (4003671).

12011001 is an equidigital number, since it uses as much as digits as its factorization.

12011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003670.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 12011001 is about 3465.6891089652. The cubic root of 12011001 is about 229.0127882614.

Adding to 12011001 its reverse (10011021), we get a palindrome (22022022).

Multiplying 12011001 by its reverse (10011021), we get a palindrome (120242383242021).

The spelling of 12011001 in words is "twelve million, eleven thousand, one".

Divisors: 1 3 4003667 12011001