12331123111220 has 48 divisors (see below), whose sum is σ = 25909578345168. Its totient is φ = 4929741511680.

The previous prime is 12331123111199. The next prime is 12331123111297. The reversal of 12331123111220 is 2211132113321.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1519100620324 + 10812022490896 = 1232518^2 + 3288164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289734182 + ... + 289776738.

It is an arithmetic number, because the mean of its divisors is an integer number (539782882191).

Almost surely, 2^{12331123111220} is an apocalyptic number.

12331123111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331123111220 is an abundant number, since it is smaller than the sum of its proper divisors (13578455233948).

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

12331123111220 is a wasteful number, since it uses less digits than its factorization.

12331123111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50180 (or 50178 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12331123111220 its reverse (2211132113321), we get a palindrome (14542255224541).

The spelling of 12331123111220 in words is "twelve trillion, three hundred thirty-one billion, one hundred twenty-three million, one hundred eleven thousand, two hundred twenty".