12310221123 has 24 divisors (see below), whose sum is σ = 18342571728. Its totient is φ = 7949783232.

The previous prime is 12310221103. The next prime is 12310221137. The reversal of 12310221123 is 32112201321.

12310221123 is a `hidden beast` number, since 12 + 310 + 221 + 123 = 666.

It is not a de Polignac number, because 12310221123 - 2¹³ = 12310212931 is a prime.

It is a super-2 number, since 2×12310221123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12310221096 and 12310221105.

It is not an unprimeable number, because it can be changed into a prime (12310221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5836 + ... + 157017.

It is an arithmetic number, because the mean of its divisors is an integer number (764273822).

Almost surely, 2^12310221123 is an apocalyptic number.

12310221123 is a deficient number, since it is larger than the sum of its proper divisors (6032350605).

12310221123 is a wasteful number, since it uses less digits than its factorization.

12310221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163123 (or 163120 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12310221123 its reverse (32112201321), we get a palindrome (44422422444).

The spelling of 12310221123 in words is "twelve billion, three hundred ten million, two hundred twenty-one thousand, one hundred twenty-three".