221112000212 has 12 divisors (see below), whose sum is σ = 388042167156. Its totient is φ = 110242809600.

The previous prime is 221112000211. The next prime is 221112000217. The reversal of 221112000212 is 212000211122.

It can be written as a sum of positive squares in 2 ways, for example, as 95182122256 + 125929877956 = 308516^2 + 354866^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78296039 + ... + 78298862.

It is an arithmetic number, because the mean of its divisors is an integer number (32336847263).

Almost surely, 2^221112000212 is an apocalyptic number.

It is an amenable number.

221112000212 is a deficient number, since it is larger than the sum of its proper divisors (166930166944).

221112000212 is a wasteful number, since it uses less digits than its factorization.

221112000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156595258 (or 156595256 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221112000212 its reverse (212000211122), we get a palindrome (433112211334).

The spelling of 221112000212 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twelve", and thus it is an aban number.