12131123331222 has 96 divisors (see below), whose sum is σ = 30353684961600. Its totient is φ = 3429734068224.

The previous prime is 12131123331203. The next prime is 12131123331269. The reversal of 12131123331222 is 22213332113121.

12131123331222 is a `hidden beast` number, since 1 + 2 + 1 + 311 + 2 + 33 + 312 + 2 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76540554 + ... + 76698882.

It is an arithmetic number, because the mean of its divisors is an integer number (316184218350).

Almost surely, 2^{12131123331222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12131123331222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15176842480800).

12131123331222 is an abundant number, since it is smaller than the sum of its proper divisors (18222561630378).

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

12131123331222 is a wasteful number, since it uses less digits than its factorization.

12131123331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164710 (or 164707 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 12131123331222 its reverse (22213332113121), we get a palindrome (34344455444343).

The spelling of 12131123331222 in words is "twelve trillion, one hundred thirty-one billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred twenty-two".