221012200012 has 24 divisors (see below), whose sum is σ = 389194470000. Its totient is φ = 109814613696.

The previous prime is 221012199979. The next prime is 221012200021. The reversal of 221012200012 is 210002210122.

It is a happy number.

221012200012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221012199965 and 221012200001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965614 + ... + 1172362.

It is an arithmetic number, because the mean of its divisors is an integer number (16216436250).

Almost surely, 2^221012200012 is an apocalyptic number.

It is an amenable number.

221012200012 is a deficient number, since it is larger than the sum of its proper divisors (168182269988).

221012200012 is a wasteful number, since it uses less digits than its factorization.

221012200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208425 (or 208423 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221012200012 its reverse (210002210122), we get a palindrome (431014410134).

The spelling of 221012200012 in words is "two hundred twenty-one billion, twelve million, two hundred thousand, twelve".