12031220103 has 16 divisors (see below), whose sum is σ = 18338415360. Its totient is φ = 6873060096.

The previous prime is 12031220101. The next prime is 12031220119. The reversal of 12031220103 is 30102213021.

It is not a de Polignac number, because 12031220103 - 2¹ = 12031220101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450 + ... + 155127.

It is an arithmetic number, because the mean of its divisors is an integer number (1146150960).

Almost surely, 2^12031220103 is an apocalyptic number.

12031220103 is a deficient number, since it is larger than the sum of its proper divisors (6307195257).

12031220103 is a wasteful number, since it uses less digits than its factorization.

12031220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160246.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12031220103 its reverse (30102213021), we get a palindrome (42133433124).

The spelling of 12031220103 in words is "twelve billion, thirty-one million, two hundred twenty thousand, one hundred three".