212112120104 has 64 divisors (see below), whose sum is σ = 419764343040. Its totient is φ = 100370851840.

The previous prime is 212112120089. The next prime is 212112120109. The reversal of 212112120104 is 401021211212.

It is not an unprimeable number, because it can be changed into a prime (212112120109) 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 15 ways as a sum of consecutive naturals, for example, 1681127 + ... + 1802889.

It is an arithmetic number, because the mean of its divisors is an integer number (6558817860).

Almost surely, 2^212112120104 is an apocalyptic number.

It is an amenable number.

212112120104 is a deficient number, since it is larger than the sum of its proper divisors (207652222936).

212112120104 is a wasteful number, since it uses less digits than its factorization.

212112120104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121970 (or 121966 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212112120104 its reverse (401021211212), we get a palindrome (613133331316).

The spelling of 212112120104 in words is "two hundred twelve billion, one hundred twelve million, one hundred twenty thousand, one hundred four".