12012222123 has 36 divisors (see below), whose sum is σ = 20075557320. Its totient is φ = 6896957760.

The previous prime is 12012222119. The next prime is 12012222127. The reversal of 12012222123 is 32122221021.

It is an interprime number because it is at equal distance from previous prime (12012222119) and next prime (12012222127).

It is not a de Polignac number, because 12012222123 - 2² = 12012222119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012222096 and 12012222105.

It is not an unprimeable number, because it can be changed into a prime (12012222127) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 269586 + ... + 310967.

It is an arithmetic number, because the mean of its divisors is an integer number (557654370).

Almost surely, 2^12012222123 is an apocalyptic number.

12012222123 is a deficient number, since it is larger than the sum of its proper divisors (8063335197).

12012222123 is a wasteful number, since it uses less digits than its factorization.

12012222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580600 (or 580586 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12012222123 its reverse (32122221021), we get a palindrome (44134443144).

The spelling of 12012222123 in words is "twelve billion, twelve million, two hundred twenty-two thousand, one hundred twenty-three".