123212001112 has 32 divisors (see below), whose sum is σ = 232566621120. Its totient is φ = 61194481920.

The previous prime is 123212001047. The next prime is 123212001149. The reversal of 123212001112 is 211100212321.

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, 4547028 + ... + 4574044.

It is an arithmetic number, because the mean of its divisors is an integer number (7267706910).

Almost surely, 2^123212001112 is an apocalyptic number.

It is an amenable number.

123212001112 is a deficient number, since it is larger than the sum of its proper divisors (109354620008).

123212001112 is a wasteful number, since it uses less digits than its factorization.

123212001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30811 (or 30807 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 123212001112 its reverse (211100212321), we get a palindrome (334312213433).

The spelling of 123212001112 in words is "one hundred twenty-three billion, two hundred twelve million, one thousand, one hundred twelve".