12212112103 has 4 divisors (see below), whose sum is σ = 12233277520. Its totient is φ = 12190946688.

The previous prime is 12212112091. The next prime is 12212112119. The reversal of 12212112103 is 30121121221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30121121221 = 1493 ⋅20174897.

It is a cyclic number.

It is not a de Polignac number, because 12212112103 - 2⁹ = 12212111591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212115103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10581843 + ... + 10582996.

It is an arithmetic number, because the mean of its divisors is an integer number (3058319380).

Almost surely, 2^12212112103 is an apocalyptic number.

12212112103 is a deficient number, since it is larger than the sum of its proper divisors (21165417).

12212112103 is an equidigital number, since it uses as much as digits as its factorization.

12212112103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21165416.

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

Adding to 12212112103 its reverse (30121121221), we get a palindrome (42333233324).

The spelling of 12212112103 in words is "twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred three".