212112311222103 has 32 divisors (see below), whose sum is σ = 295514106209280. Its totient is φ = 135076125169920.

The previous prime is 212112311222099. The next prime is 212112311222117. The reversal of 212112311222103 is 301222113211212.

It is not a de Polignac number, because 212112311222103 - 2² = 212112311222099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112311222173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459231825 + ... + 459693477.

It is an arithmetic number, because the mean of its divisors is an integer number (9234815819040).

Almost surely, 2^{212112311222103} is an apocalyptic number.

212112311222103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212112311222103 is a deficient number, since it is larger than the sum of its proper divisors (83401794987177).

212112311222103 is a wasteful number, since it uses less digits than its factorization.

212112311222103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470719.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 212112311222103 its reverse (301222113211212), we get a palindrome (513334424433315).

The spelling of 212112311222103 in words is "two hundred twelve trillion, one hundred twelve billion, three hundred eleven million, two hundred twenty-two thousand, one hundred three".