221102002012 has 6 divisors (see below), whose sum is σ = 386928503528. Its totient is φ = 110551001004.

The previous prime is 221102002003. The next prime is 221102002031. The reversal of 221102002012 is 210200201122.

It is a happy number.

221102002012 is digitally balanced in base 3, 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 = 221102001983 and 221102002001.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27637750248 + ... + 27637750255.

Almost surely, 2^221102002012 is an apocalyptic number.

It is an amenable number.

221102002012 is a deficient number, since it is larger than the sum of its proper divisors (165826501516).

221102002012 is a wasteful number, since it uses less digits than its factorization.

221102002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55275500507 (or 55275500505 counting only the distinct ones).

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

Adding to 221102002012 its reverse (210200201122), we get a palindrome (431302203134).

The spelling of 221102002012 in words is "two hundred twenty-one billion, one hundred two million, two thousand, twelve".