123103112212 has 24 divisors (see below), whose sum is σ = 220701198312. Its totient is φ = 60045849600.

The previous prime is 123103112207. The next prime is 123103112257. The reversal of 123103112212 is 212211301321.

It can be written as a sum of positive squares in 4 ways, for example, as 18383563396 + 104719548816 = 135586^2 + 323604^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123103112212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3764412 + ... + 3796972.

It is an arithmetic number, because the mean of its divisors is an integer number (9195883263).

Almost surely, 2^123103112212 is an apocalyptic number.

It is an amenable number.

123103112212 is a deficient number, since it is larger than the sum of its proper divisors (97598086100).

123103112212 is a wasteful number, since it uses less digits than its factorization.

123103112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55659 (or 55657 counting only the distinct ones).

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

Adding to 123103112212 its reverse (212211301321), we get a palindrome (335314413533).

The spelling of 123103112212 in words is "one hundred twenty-three billion, one hundred three million, one hundred twelve thousand, two hundred twelve".