12311203112112 has 80 divisors (see below), whose sum is σ = 32038778102240. Its totient is φ = 4073516697600.

The previous prime is 12311203112081. The next prime is 12311203112119. The reversal of 12311203112112 is 21121130211321.

It is a super-2 number, since 2×12311203112112² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12311203112119) 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, 3390564 + ... + 6009852.

It is an arithmetic number, because the mean of its divisors is an integer number (400484726278).

Almost surely, 2^{12311203112112} is an apocalyptic number.

12311203112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12311203112112 is an abundant number, since it is smaller than the sum of its proper divisors (19727574990128).

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

12311203112112 is a wasteful number, since it uses less digits than its factorization.

12311203112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620022 (or 2620016 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12311203112112 its reverse (21121130211321), we get a palindrome (33432333323433).

The spelling of 12311203112112 in words is "twelve trillion, three hundred eleven billion, two hundred three million, one hundred twelve thousand, one hundred twelve".