112221102221 has 4 divisors (see below), whose sum is σ = 113040234492. Its totient is φ = 111401969952.

The previous prime is 112221102209. The next prime is 112221102247. The reversal of 112221102221 is 122201122211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122201122211 = 7 ⋅17457303173.

It can be written as a sum of positive squares in 2 ways, for example, as 59785140100 + 52435962121 = 244510^2 + 228989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112221102221 is a prime.

It is a super-2 number, since 2×112221102221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 112221102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221102281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409565930 + ... + 409566203.

It is an arithmetic number, because the mean of its divisors is an integer number (28260058623).

Almost surely, 2^112221102221 is an apocalyptic number.

It is an amenable number.

112221102221 is a deficient number, since it is larger than the sum of its proper divisors (819132271).

112221102221 is an equidigital number, since it uses as much as digits as its factorization.

112221102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819132270.

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

Adding to 112221102221 its reverse (122201122211), we get a palindrome (234422224432).

The spelling of 112221102221 in words is "one hundred twelve billion, two hundred twenty-one million, one hundred two thousand, two hundred twenty-one".