1331232213123 has 12 divisors (see below), whose sum is σ = 1922974801488. Its totient is φ = 887449452720.

The previous prime is 1331232213119. The next prime is 1331232213149. The reversal of 1331232213123 is 3213122321331.

1331232213123 is a `hidden beast` number, since 1 + 3 + 3 + 123 + 221 + 312 + 3 = 666.

It is not a de Polignac number, because 1331232213123 - 2² = 1331232213119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331232213923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3005415 + ... + 3419792.

It is an arithmetic number, because the mean of its divisors is an integer number (160247900124).

Almost surely, 2^{1331232213123} is an apocalyptic number.

1331232213123 is a deficient number, since it is larger than the sum of its proper divisors (591742588365).

1331232213123 is a wasteful number, since it uses less digits than its factorization.

1331232213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448234 (or 6448231 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1331232213123 its reverse (3213122321331), we get a palindrome (4544354534454).

The spelling of 1331232213123 in words is "one trillion, three hundred thirty-one billion, two hundred thirty-two million, two hundred thirteen thousand, one hundred twenty-three".