112211202021221 has 16 divisors (see below), whose sum is σ = 118510186853760. Its totient is φ = 105952110937920.

The previous prime is 112211202021199. The next prime is 112211202021227. The reversal of 112211202021221 is 122120202112211.

It is a cyclic number.

It is not a de Polignac number, because 112211202021221 - 2¹⁸ = 112211201759077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112211202021193 and 112211202021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112211202021227) 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 15 ways as a sum of consecutive naturals, for example, 1103561 + ... + 15021326.

It is an arithmetic number, because the mean of its divisors is an integer number (7406886678360).

Almost surely, 2^{112211202021221} is an apocalyptic number.

It is an amenable number.

112211202021221 is a deficient number, since it is larger than the sum of its proper divisors (6298984832539).

112211202021221 is a wasteful number, since it uses less digits than its factorization.

112211202021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16126124.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112211202021221 its reverse (122120202112211), we get a palindrome (234331404133432).

The spelling of 112211202021221 in words is "one hundred twelve trillion, two hundred eleven billion, two hundred two million, twenty-one thousand, two hundred twenty-one".