123120212312 has 32 divisors (see below), whose sum is σ = 238424908800. Its totient is φ = 59542365600.

The previous prime is 123120212279. The next prime is 123120212321. The reversal of 123120212312 is 213212021321.

It is a congruent number.

It is an unprimeable number.

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, 333887 + ... + 598097.

It is an arithmetic number, because the mean of its divisors is an integer number (7450778400).

Almost surely, 2^123120212312 is an apocalyptic number.

It is an amenable number.

123120212312 is a deficient number, since it is larger than the sum of its proper divisors (115304696488).

123120212312 is a wasteful number, since it uses less digits than its factorization.

123120212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266127 (or 266123 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123120212312 its reverse (213212021321), we get a palindrome (336332233633).

The spelling of 123120212312 in words is "one hundred twenty-three billion, one hundred twenty million, two hundred twelve thousand, three hundred twelve".