2231221323123 has 96 divisors (see below), whose sum is σ = 3773134310400. Its totient is φ = 1258806624768.

The previous prime is 2231221323113. The next prime is 2231221323127. The reversal of 2231221323123 is 3213231221322.

2231221323123 is a `hidden beast` number, since 2 + 2 + 312 + 2 + 1 + 32 + 312 + 3 = 666.

It is not a de Polignac number, because 2231221323123 - 2⁹ = 2231221322611 is a prime.

It is a super-3 number, since 3×2231221323123³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231221323127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9178836 + ... + 9418782.

It is an arithmetic number, because the mean of its divisors is an integer number (39303482400).

Almost surely, 2^{2231221323123} is an apocalyptic number.

2231221323123 is a deficient number, since it is larger than the sum of its proper divisors (1541912987277).

2231221323123 is a wasteful number, since it uses less digits than its factorization.

2231221323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240121 (or 240118 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 2231221323123 its reverse (3213231221322), we get a palindrome (5444452544445).

The spelling of 2231221323123 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred twenty-three".