123112020212 has 12 divisors (see below), whose sum is σ = 215543847456. Its totient is φ = 61528063800.

The previous prime is 123112020211. The next prime is 123112020217. The reversal of 123112020212 is 212020211321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112020211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6976664 + ... + 6994287.

It is an arithmetic number, because the mean of its divisors is an integer number (17961987288).

Almost surely, 2^123112020212 is an apocalyptic number.

It is an amenable number.

123112020212 is a deficient number, since it is larger than the sum of its proper divisors (92431827244).

123112020212 is a wasteful number, since it uses less digits than its factorization.

123112020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13973158 (or 13973156 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123112020212 its reverse (212020211321), we get a palindrome (335132231533).

The spelling of 123112020212 in words is "one hundred twenty-three billion, one hundred twelve million, twenty thousand, two hundred twelve".