12215105103 has 16 divisors (see below), whose sum is σ = 16496121600. Its totient is φ = 8038902144.

The previous prime is 12215105053. The next prime is 12215105117. The reversal of 12215105103 is 30150151221.

It is not a de Polignac number, because 12215105103 - 2⁹ = 12215104591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12215105103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215105173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305623 + ... + 343271.

It is an arithmetic number, because the mean of its divisors is an integer number (1031007600).

Almost surely, 2^12215105103 is an apocalyptic number.

12215105103 is a deficient number, since it is larger than the sum of its proper divisors (4281016497).

12215105103 is a wasteful number, since it uses less digits than its factorization.

12215105103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39038.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 12215105103 its reverse (30150151221), we get a palindrome (42365256324).

The spelling of 12215105103 in words is "twelve billion, two hundred fifteen million, one hundred five thousand, one hundred three".