123223111012 has 12 divisors (see below), whose sum is σ = 220899967596. Its totient is φ = 60108834560.

The previous prime is 123223111009. The next prime is 123223111019. The reversal of 123223111012 is 210111322321.

It can be written as a sum of positive squares in 2 ways, for example, as 5597433856 + 117625677156 = 74816^2 + 342966^2 .

It is not an unprimeable number, because it can be changed into a prime (123223111019) 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 3 ways as a sum of consecutive naturals, for example, 375680053 + ... + 375680380.

It is an arithmetic number, because the mean of its divisors is an integer number (18408330633).

Almost surely, 2^123223111012 is an apocalyptic number.

It is an amenable number.

123223111012 is a deficient number, since it is larger than the sum of its proper divisors (97676856584).

123223111012 is a wasteful number, since it uses less digits than its factorization.

123223111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751360478 (or 751360476 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123223111012 its reverse (210111322321), we get a palindrome (333334433333).

The spelling of 123223111012 in words is "one hundred twenty-three billion, two hundred twenty-three million, one hundred eleven thousand, twelve".