221110012 has 12 divisors (see below), whose sum is σ = 387054976. Its totient is φ = 110522880.

The previous prime is 221110003. The next prime is 221110013. The reversal of 221110012 is 210011122.

221110012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14437 + ... + 25507.

Almost surely, 2^221110012 is an apocalyptic number.

It is an amenable number.

221110012 is a deficient number, since it is larger than the sum of its proper divisors (165944964).

221110012 is a wasteful number, since it uses less digits than its factorization.

221110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16068 (or 16066 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 221110012 is about 14869.7683909333. The cubic root of 221110012 is about 604.6946636755.

Adding to 221110012 its reverse (210011122), we get a palindrome (431121134).

The spelling of 221110012 in words is "two hundred twenty-one million, one hundred ten thousand, twelve".