12011145 has 8 divisors (see below), whose sum is σ = 19217856. Its totient is φ = 6405936.

The previous prime is 12011143. The next prime is 12011149. The reversal of 12011145 is 54111021.

It is a happy number.

12011145 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011145 - 2¹ = 12011143 is a prime.

It is a super-2 number, since 2×12011145² = 288535208422050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 800743 = 12011145 / (1 + 2 + 0 + 1 + 1 + 1 + 4 + 5).

It is not an unprimeable number, because it can be changed into a prime (12011143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400357 + ... + 400386.

It is an arithmetic number, because the mean of its divisors is an integer number (2402232).

Almost surely, 2^12011145 is an apocalyptic number.

12011145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12011145 is a deficient number, since it is larger than the sum of its proper divisors (7206711).

12011145 is an equidigital number, since it uses as much as digits as its factorization.

12011145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800751.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 12011145 is about 3465.7098839920. The cubic root of 12011145 is about 229.0137034699.

Adding to 12011145 its reverse (54111021), we get a palindrome (66122166).

It can be divided in two parts, 1201 and 1145, that added together give a triangular number (2346 = T₆₈).

The spelling of 12011145 in words is "twelve million, eleven thousand, one hundred forty-five".