112221102121 has 4 divisors (see below), whose sum is σ = 113332202244. Its totient is φ = 111110002000.

The previous prime is 112221102079. The next prime is 112221102127. The reversal of 112221102121 is 121201122211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92561977600 + 19659124521 = 304240^2 + 140211^2 .

It is a cyclic number.

It is not a de Polignac number, because 112221102121 - 2⁹ = 112221101609 is a prime.

It is a super-2 number, since 2×112221102121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112221102095 and 112221102104.

It is not an unprimeable number, because it can be changed into a prime (112221102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555549910 + ... + 555550111.

It is an arithmetic number, because the mean of its divisors is an integer number (28333050561).

Almost surely, 2^112221102121 is an apocalyptic number.

It is an amenable number.

112221102121 is a deficient number, since it is larger than the sum of its proper divisors (1111100123).

112221102121 is a wasteful number, since it uses less digits than its factorization.

112221102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111100122.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112221102121 its reverse (121201122211), we get a palindrome (233422224332).

The spelling of 112221102121 in words is "one hundred twelve billion, two hundred twenty-one million, one hundred two thousand, one hundred twenty-one".