2331123422221 has 16 divisors (see below), whose sum is σ = 2551783671360. Its totient is φ = 2111922305280.

The previous prime is 2331123422197. The next prime is 2331123422237. The reversal of 2331123422221 is 1222243211332.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2331123422221 - 2⁷ = 2331123422093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2331123422221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331123422521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19760805 + ... + 19878421.

It is an arithmetic number, because the mean of its divisors is an integer number (159486479460).

Almost surely, 2^{2331123422221} is an apocalyptic number.

It is an amenable number.

2331123422221 is a deficient number, since it is larger than the sum of its proper divisors (220660249139).

2331123422221 is a wasteful number, since it uses less digits than its factorization.

2331123422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123804.

The product of its digits is 6912, while the sum is 28.

Adding to 2331123422221 its reverse (1222243211332), we get a palindrome (3553366633553).

The spelling of 2331123422221 in words is "two trillion, three hundred thirty-one billion, one hundred twenty-three million, four hundred twenty-two thousand, two hundred twenty-one".