221111120312 has 16 divisors (see below), whose sum is σ = 414595899360. Its totient is φ = 110552213824.

The previous prime is 221111120297. The next prime is 221111120323. The reversal of 221111120312 is 213021111122.

It is a happy number.

221111120312 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125408 + ... + 676719.

It is an arithmetic number, because the mean of its divisors is an integer number (25912243710).

Almost surely, 2^221111120312 is an apocalyptic number.

It is an amenable number.

221111120312 is a deficient number, since it is larger than the sum of its proper divisors (193484779048).

221111120312 is a wasteful number, since it uses less digits than its factorization.

221111120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836590 (or 836586 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 221111120312 its reverse (213021111122), we get a palindrome (434132231434).

The spelling of 221111120312 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred twenty thousand, three hundred twelve".