231221120044 has 6 divisors (see below), whose sum is σ = 404636960084. Its totient is φ = 115610560020.

The previous prime is 231221120021. The next prime is 231221120051. The reversal of 231221120044 is 440021122132.

It is a junction number, because it is equal to n+sod(n) for n = 231221119997 and 231221120024.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28902640002 + ... + 28902640009.

Almost surely, 2^231221120044 is an apocalyptic number.

It is an amenable number.

231221120044 is a deficient number, since it is larger than the sum of its proper divisors (173415840040).

231221120044 is a wasteful number, since it uses less digits than its factorization.

231221120044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57805280015 (or 57805280013 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 231221120044 its reverse (440021122132), we get a palindrome (671242242176).

The spelling of 231221120044 in words is "two hundred thirty-one billion, two hundred twenty-one million, one hundred twenty thousand, forty-four".