12031211133220 has 12 divisors (see below), whose sum is σ = 25265543379804. Its totient is φ = 4812484453280.

The previous prime is 12031211133211. The next prime is 12031211133251. The reversal of 12031211133220 is 2233111213021.

It can be written as a sum of positive squares in 2 ways, for example, as 8416740950244 + 3614470182976 = 2901162^2 + 1901176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12031211133191 and 12031211133200.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 300780278311 + ... + 300780278350.

It is an arithmetic number, because the mean of its divisors is an integer number (2105461948317).

Almost surely, 2^{12031211133220} is an apocalyptic number.

12031211133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031211133220 is an abundant number, since it is smaller than the sum of its proper divisors (13234332246584).

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

12031211133220 is a wasteful number, since it uses less digits than its factorization.

12031211133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601560556670 (or 601560556668 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12031211133220 its reverse (2233111213021), we get a palindrome (14264322346241).

The spelling of 12031211133220 in words is "twelve trillion, thirty-one billion, two hundred eleven million, one hundred thirty-three thousand, two hundred twenty".