2222112120221 has 16 divisors (see below), whose sum is σ = 2546942910720. Its totient is φ = 1899131184000.

The previous prime is 2222112120199. The next prime is 2222112120229. The reversal of 2222112120221 is 1220212112222.

It is a cyclic number.

It is not a de Polignac number, because 2222112120221 - 2⁶ = 2222112120157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222112120193 and 2222112120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222112120229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8035760 + ... + 8307686.

It is an arithmetic number, because the mean of its divisors is an integer number (159183931920).

Almost surely, 2^{2222112120221} is an apocalyptic number.

It is an amenable number.

2222112120221 is a deficient number, since it is larger than the sum of its proper divisors (324830790499).

2222112120221 is a wasteful number, since it uses less digits than its factorization.

2222112120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275324.

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

Adding to 2222112120221 its reverse (1220212112222), we get a palindrome (3442324232443).

It can be divided in two parts, 222211 and 2120221, that added together give a palindrome (2342432).

The spelling of 2222112120221 in words is "two trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty thousand, two hundred twenty-one".