112221201100021 has 8 divisors (see below), whose sum is σ = 120853847540664. Its totient is φ = 103588589853120.

The previous prime is 112221201100009. The next prime is 112221201100031. The reversal of 112221201100021 is 120001102122211.

It can be written as a sum of positive squares in 4 ways, for example, as 38595019575121 + 73626181524900 = 6212489^2 + 8580570^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112221201100021 - 2¹⁵ = 112221201067253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112221201099968 and 112221201100004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221201100031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1980106 + ... + 15111691.

It is an arithmetic number, because the mean of its divisors is an integer number (15106730942583).

Almost surely, 2^{112221201100021} is an apocalyptic number.

It is an amenable number.

112221201100021 is a deficient number, since it is larger than the sum of its proper divisors (8632646440643).

112221201100021 is a wasteful number, since it uses less digits than its factorization.

112221201100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17596871.

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

Adding to 112221201100021 its reverse (120001102122211), we get a palindrome (232222303222232).

The spelling of 112221201100021 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred one million, one hundred thousand, twenty-one".