231222111146446 has 32 divisors (see below), whose sum is σ = 400141836864000. Its totient is φ = 98158169678112.

The previous prime is 231222111146417. The next prime is 231222111146447. The reversal of 231222111146446 is 644641111222132.

It is a junction number, because it is equal to n+sod(n) for n = 231222111146399 and 231222111146408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231222111146447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134475061 + ... + 136183648.

It is an arithmetic number, because the mean of its divisors is an integer number (12504432402000).

Almost surely, 2^{231222111146446} is an apocalyptic number.

231222111146446 is a deficient number, since it is larger than the sum of its proper divisors (168919725717554).

231222111146446 is a wasteful number, since it uses less digits than its factorization.

231222111146446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270659296.

The product of its digits is 110592, while the sum is 40.

Adding to 231222111146446 its reverse (644641111222132), we get a palindrome (875863222368578).

The spelling of 231222111146446 in words is "two hundred thirty-one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred forty-six thousand, four hundred forty-six".