221112102212 has 6 divisors (see below), whose sum is σ = 386946178878. Its totient is φ = 110556051104.

The previous prime is 221112102149. The next prime is 221112102269. The reversal of 221112102212 is 212201211122.

221112102212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 203063791876 + 18048310336 = 450626^2 + 134344^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27639012773 + ... + 27639012780.

It is an arithmetic number, because the mean of its divisors is an integer number (64491029813).

Almost surely, 2^221112102212 is an apocalyptic number.

It is an amenable number.

221112102212 is a deficient number, since it is larger than the sum of its proper divisors (165834076666).

221112102212 is a wasteful number, since it uses less digits than its factorization.

221112102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55278025557 (or 55278025555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221112102212 its reverse (212201211122), we get a palindrome (433313313334).

The spelling of 221112102212 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred two thousand, two hundred twelve".