12164511 has 4 divisors (see below), whose sum is σ = 16219352. Its totient is φ = 8109672.

The previous prime is 12164497. The next prime is 12164513. The reversal of 12164511 is 11546121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11546121 = 3 ⋅3848707.

It is not a de Polignac number, because 12164511 - 2⁹ = 12163999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12164513) 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, 2027416 + ... + 2027421.

It is an arithmetic number, because the mean of its divisors is an integer number (4054838).

Almost surely, 2^12164511 is an apocalyptic number.

12164511 is a deficient number, since it is larger than the sum of its proper divisors (4054841).

12164511 is an equidigital number, since it uses as much as digits as its factorization.

12164511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054840.

The product of its digits is 240, while the sum is 21.

The square root of 12164511 is about 3487.7659038416. The cubic root of 12164511 is about 229.9843152505.

The spelling of 12164511 in words is "twelve million, one hundred sixty-four thousand, five hundred eleven".