12120103212312 has 32 divisors (see below), whose sum is σ = 31345094516400. Its totient is φ = 3900722872704.

The previous prime is 12120103212307. The next prime is 12120103212317. The reversal of 12120103212312 is 21321230102121.

It is an interprime number because it is at equal distance from previous prime (12120103212307) and next prime (12120103212317).

It is a super-2 number, since 2×12120103212312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120103212317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8706970003 + ... + 8706971394.

Almost surely, 2^{12120103212312} is an apocalyptic number.

12120103212312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12120103212312 is an abundant number, since it is smaller than the sum of its proper divisors (19224991304088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12120103212312 is a wasteful number, since it uses less digits than its factorization.

12120103212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17413941435 (or 17413941431 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12120103212312 its reverse (21321230102121), we get a palindrome (33441333314433).

The spelling of 12120103212312 in words is "twelve trillion, one hundred twenty billion, one hundred three million, two hundred twelve thousand, three hundred twelve".