12002221123 has 8 divisors (see below), whose sum is σ = 12534513696. Its totient is φ = 11470800000.

The previous prime is 12002221081. The next prime is 12002221139. The reversal of 12002221123 is 32112220021.

It is a happy number.

12002221123 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 12002221123 - 2⁹ = 12002220611 is a prime.

It is a super-2 number, since 2×12002221123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002221097 and 12002221106.

It is not an unprimeable number, because it can be changed into a prime (12002221163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189628 + ... + 244873.

It is an arithmetic number, because the mean of its divisors is an integer number (1566814212).

Almost surely, 2^12002221123 is an apocalyptic number.

12002221123 is a deficient number, since it is larger than the sum of its proper divisors (532292573).

12002221123 is a wasteful number, since it uses less digits than its factorization.

12002221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435725.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12002221123 its reverse (32112220021), we get a palindrome (44114441144).

The spelling of 12002221123 in words is "twelve billion, two million, two hundred twenty-one thousand, one hundred twenty-three".