123120303212 has 6 divisors (see below), whose sum is σ = 215460530628. Its totient is φ = 61560151604.

The previous prime is 123120303211. The next prime is 123120303223. The reversal of 123120303212 is 212303021321.

123120303212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123120303211) 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 as a sum of consecutive naturals, namely, 15390037898 + ... + 15390037905.

It is an arithmetic number, because the mean of its divisors is an integer number (35910088438).

Almost surely, 2^123120303212 is an apocalyptic number.

It is an amenable number.

123120303212 is a deficient number, since it is larger than the sum of its proper divisors (92340227416).

123120303212 is a wasteful number, since it uses less digits than its factorization.

123120303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30780075807 (or 30780075805 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123120303212 its reverse (212303021321), we get a palindrome (335423324533).

The spelling of 123120303212 in words is "one hundred twenty-three billion, one hundred twenty million, three hundred three thousand, two hundred twelve".