12312212103 has 6 divisors (see below), whose sum is σ = 17784306384. Its totient is φ = 8208141396.

The previous prime is 12312212089. The next prime is 12312212113. The reversal of 12312212103 is 30121221321.

12312212103 is a `hidden beast` number, since 1 + 231 + 221 + 210 + 3 = 666.

It is not a de Polignac number, because 12312212103 - 2¹⁸ = 12311949959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312212113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684011775 + ... + 684011792.

It is an arithmetic number, because the mean of its divisors is an integer number (2964051064).

Almost surely, 2^12312212103 is an apocalyptic number.

12312212103 is a deficient number, since it is larger than the sum of its proper divisors (5472094281).

12312212103 is a wasteful number, since it uses less digits than its factorization.

12312212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368023573 (or 1368023570 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12312212103 its reverse (30121221321), we get a palindrome (42433433424).

The spelling of 12312212103 in words is "twelve billion, three hundred twelve million, two hundred twelve thousand, one hundred three".