12010342123 has 4 divisors (see below), whose sum is σ = 12934214608. Its totient is φ = 11086469640.

The previous prime is 12010342067. The next prime is 12010342129. The reversal of 12010342123 is 32124301021.

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: 32124301021 = 89041 ⋅360781.

It is a cyclic number.

It is not a de Polignac number, because 12010342123 - 2¹³ = 12010333931 is a prime.

It is a super-3 number, since 3×12010342123³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12010342123.

It is not an unprimeable number, because it can be changed into a prime (12010342129) 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, 461936223 + ... + 461936248.

It is an arithmetic number, because the mean of its divisors is an integer number (3233553652).

Almost surely, 2^12010342123 is an apocalyptic number.

12010342123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12010342123 is a deficient number, since it is larger than the sum of its proper divisors (923872485).

12010342123 is an equidigital number, since it uses as much as digits as its factorization.

12010342123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923872484.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12010342123 its reverse (32124301021), we get a palindrome (44134643144).

The spelling of 12010342123 in words is "twelve billion, ten million, three hundred forty-two thousand, one hundred twenty-three".