12120210103 has 4 divisors (see below), whose sum is σ = 12125867968. Its totient is φ = 12114552240.

The previous prime is 12120210097. The next prime is 12120210131. The reversal of 12120210103 is 30101202121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30101202121 = 62981 ⋅477941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120210103 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 (12120210803) 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, 2825718 + ... + 2830003.

It is an arithmetic number, because the mean of its divisors is an integer number (3031466992).

Almost surely, 2^12120210103 is an apocalyptic number.

12120210103 is a deficient number, since it is larger than the sum of its proper divisors (5657865).

12120210103 is an equidigital number, since it uses as much as digits as its factorization.

12120210103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657864.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12120210103 its reverse (30101202121), we get a palindrome (42221412224).

The spelling of 12120210103 in words is "twelve billion, one hundred twenty million, two hundred ten thousand, one hundred three".