221111200012 has 6 divisors (see below), whose sum is σ = 386944600028. Its totient is φ = 110555600004.

The previous prime is 221111200007. The next prime is 221111200061. The reversal of 221111200012 is 210002111122.

It is a junction number, because it is equal to n+sod(n) for n = 221111199965 and 221111200001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27638899998 + ... + 27638900005.

Almost surely, 2^221111200012 is an apocalyptic number.

It is an amenable number.

221111200012 is a deficient number, since it is larger than the sum of its proper divisors (165833400016).

221111200012 is a wasteful number, since it uses less digits than its factorization.

221111200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55277800007 (or 55277800005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221111200012 its reverse (210002111122), we get a palindrome (431113311134).

The spelling of 221111200012 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred thousand, twelve".