12321321103 has 32 divisors (see below), whose sum is σ = 15337398272. Its totient is φ = 9638352000.

The previous prime is 12321321083. The next prime is 12321321127. The reversal of 12321321103 is 30112312321.

It is a cyclic number.

It is not a de Polignac number, because 12321321103 - 2³³ = 3731386511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321321193) 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, 3062233 + ... + 3066253.

It is an arithmetic number, because the mean of its divisors is an integer number (479293696).

Almost surely, 2^12321321103 is an apocalyptic number.

12321321103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12321321103 is a deficient number, since it is larger than the sum of its proper divisors (3016077169).

12321321103 is a wasteful number, since it uses less digits than its factorization.

12321321103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12321321103 its reverse (30112312321), we get a palindrome (42433633424).

It can be divided in two parts, 1232132 and 1103, that added together give a triangular number (1233235 = T₁₅₇₀).

The spelling of 12321321103 in words is "twelve billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred three".