12011013 has 24 divisors (see below), whose sum is σ = 20075328. Its totient is φ = 6777792.

The previous prime is 12011009. The next prime is 12011029. The reversal of 12011013 is 31011021.

It is not a de Polignac number, because 12011013 - 2² = 12011009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12010986 and 12011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4081 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (836472).

Almost surely, 2^12011013 is an apocalyptic number.

It is an amenable number.

12011013 is a deficient number, since it is larger than the sum of its proper divisors (8064315).

12011013 is a wasteful number, since it uses less digits than its factorization.

12011013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 12011013 is about 3465.6908402222. The cubic root of 12011013 is about 229.0128645290.

Adding to 12011013 its reverse (31011021), we get a palindrome (43022034).

The spelling of 12011013 in words is "twelve million, eleven thousand, thirteen".