212103112113 has 16 divisors (see below), whose sum is σ = 317337993600. Its totient is φ = 140002052400.

The previous prime is 212103112079. The next prime is 212103112153. The reversal of 212103112113 is 311211301212.

It is not a de Polignac number, because 212103112113 - 2⁶ = 212103112049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212103112153) 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, 38886733 + ... + 38892186.

It is an arithmetic number, because the mean of its divisors is an integer number (19833624600).

Almost surely, 2^212103112113 is an apocalyptic number.

It is an amenable number.

212103112113 is a deficient number, since it is larger than the sum of its proper divisors (105234881487).

212103112113 is a wasteful number, since it uses less digits than its factorization.

212103112113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77779029 (or 77779023 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 212103112113 its reverse (311211301212), we get a palindrome (523314413325).

The spelling of 212103112113 in words is "two hundred twelve billion, one hundred three million, one hundred twelve thousand, one hundred thirteen".