112021002222221 has 4 divisors (see below), whose sum is σ = 112021046357244. Its totient is φ = 112020958087200.

The previous prime is 112021002222193. The next prime is 112021002222253. The reversal of 112021002222221 is 122222200120211.

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 74350696609225 + 37670305612996 = 8622685^2 + 6137614^2 .

It is a cyclic number.

It is not a de Polignac number, because 112021002222221 - 2²⁶ = 112020935113357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112021002222193 and 112021002222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112021002222281) 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, 18011840 + ... + 23419401.

It is an arithmetic number, because the mean of its divisors is an integer number (28005261589311).

Almost surely, 2^{112021002222221} is an apocalyptic number.

It is an amenable number.

112021002222221 is a deficient number, since it is larger than the sum of its proper divisors (44135023).

112021002222221 is an equidigital number, since it uses as much as digits as its factorization.

112021002222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44135022.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 112021002222221 its reverse (122222200120211), we get a palindrome (234243202342432).

The spelling of 112021002222221 in words is "one hundred twelve trillion, twenty-one billion, two million, two hundred twenty-two thousand, two hundred twenty-one".