221011221200012 has 6 divisors (see below), whose sum is σ = 386769637100028. Its totient is φ = 110505610600004.

The previous prime is 221011221199999. The next prime is 221011221200059. The reversal of 221011221200012 is 210002122110122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626402649998 + ... + 27626402650005.

It is an arithmetic number, because the mean of its divisors is an integer number (64461606183338).

Almost surely, 2^{221011221200012} is an apocalyptic number.

It is an amenable number.

221011221200012 is a deficient number, since it is larger than the sum of its proper divisors (165758415900016).

221011221200012 is a wasteful number, since it uses less digits than its factorization.

221011221200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55252805300007 (or 55252805300005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221011221200012 its reverse (210002122110122), we get a palindrome (431013343310134).

The spelling of 221011221200012 in words is "two hundred twenty-one trillion, eleven billion, two hundred twenty-one million, two hundred thousand, twelve".