221311203102112 has 24 divisors (see below), whose sum is σ = 435706804479492. Its totient is φ = 110655506726400.

The previous prime is 221311203102103. The next prime is 221311203102139. The reversal of 221311203102112 is 211201302113122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 218597289521296 + 2713913580816 = 14785036^2 + 1647396^2 .

It is an unprimeable number.

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, 48959412 + ... + 53288332.

Almost surely, 2^{221311203102112} is an apocalyptic number.

It is an amenable number.

221311203102112 is a deficient number, since it is larger than the sum of its proper divisors (214395601377380).

221311203102112 is a wasteful number, since it uses less digits than its factorization.

221311203102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926552 (or 5926544 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 221311203102112 its reverse (211201302113122), we get a palindrome (432512505215234).

The spelling of 221311203102112 in words is "two hundred twenty-one trillion, three hundred eleven billion, two hundred three million, one hundred two thousand, one hundred twelve".