231221110120012 has 6 divisors (see below), whose sum is σ = 404636942710028. Its totient is φ = 115610555060004.

The previous prime is 231221110120009. The next prime is 231221110120031. The reversal of 231221110120012 is 210021011122132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28902638764998 + ... + 28902638765005.

Almost surely, 2^{231221110120012} is an apocalyptic number.

It is an amenable number.

231221110120012 is a deficient number, since it is larger than the sum of its proper divisors (173415832590016).

231221110120012 is a wasteful number, since it uses less digits than its factorization.

231221110120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57805277530007 (or 57805277530005 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 231221110120012 its reverse (210021011122132), we get a palindrome (441242121242144).

The spelling of 231221110120012 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, twelve".