12146005223 has 4 divisors (see below), whose sum is σ = 13250187528. Its totient is φ = 11041822920.

The previous prime is 12146005219. The next prime is 12146005229. The reversal of 12146005223 is 32250064121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32250064121 = 11 ⋅2931824011.

It is a cyclic number.

It is not a de Polignac number, because 12146005223 - 2² = 12146005219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12146005192 and 12146005201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146005229) 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, 552091136 + ... + 552091157.

It is an arithmetic number, because the mean of its divisors is an integer number (3312546882).

Almost surely, 2^12146005223 is an apocalyptic number.

12146005223 is a deficient number, since it is larger than the sum of its proper divisors (1104182305).

12146005223 is a wasteful number, since it uses less digits than its factorization.

12146005223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104182304.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 12146005223 its reverse (32250064121), we get a palindrome (44396069344).

The spelling of 12146005223 in words is "twelve billion, one hundred forty-six million, five thousand, two hundred twenty-three".