231222103331121 has 36 divisors (see below), whose sum is σ = 397992052454724. Its totient is φ = 128904308467200.

The previous prime is 231222103331071. The next prime is 231222103331159. The reversal of 231222103331121 is 121133301222132.

231222103331121 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 2 + 210 + 333 + 112 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81493499390625 + 149728603940496 = 9027375^2 + 12236364^2 .

It is not a de Polignac number, because 231222103331121 - 2⁹ = 231222103330609 is a prime.

It is a super-2 number, since 2×231222103331121² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231222103331621) 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 35 ways as a sum of consecutive naturals, for example, 6394044840 + ... + 6394081001.

It is an arithmetic number, because the mean of its divisors is an integer number (11055334790409).

Almost surely, 2^{231222103331121} is an apocalyptic number.

231222103331121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

231222103331121 is a deficient number, since it is larger than the sum of its proper divisors (166769949123603).

231222103331121 is a wasteful number, since it uses less digits than its factorization.

231222103331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12788125902 (or 12788125892 counting only the distinct ones).

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

Adding to 231222103331121 its reverse (121133301222132), we get a palindrome (352355404553253).

The spelling of 231222103331121 in words is "two hundred thirty-one trillion, two hundred twenty-two billion, one hundred three million, three hundred thirty-one thousand, one hundred twenty-one".