12031221123331 has 8 divisors (see below), whose sum is σ = 12035389356320. Its totient is φ = 12027053593152.

The previous prime is 12031221123307. The next prime is 12031221123347. The reversal of 12031221123331 is 13332112213021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12031221123331 - 2⁹ = 12031221122819 is a prime.

It is a super-2 number, since 2×12031221123331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031221123296 and 12031221123305.

It is not an unprimeable number, because it can be changed into a prime (12031221163331) 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, 35297386 + ... + 35636608.

It is an arithmetic number, because the mean of its divisors is an integer number (1504423669540).

Almost surely, 2^{12031221123331} is an apocalyptic number.

12031221123331 is a deficient number, since it is larger than the sum of its proper divisors (4168232989).

12031221123331 is an equidigital number, since it uses as much as digits as its factorization.

12031221123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351405.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12031221123331 its reverse (13332112213021), we get a palindrome (25363333336352).

The spelling of 12031221123331 in words is "twelve trillion, thirty-one billion, two hundred twenty-one million, one hundred twenty-three thousand, three hundred thirty-one".