2222120011221 has 48 divisors (see below), whose sum is σ = 3513351142080. Its totient is φ = 1342196352000.

The previous prime is 2222120011207. The next prime is 2222120011247. The reversal of 2222120011221 is 1221100212222.

It is a happy number.

2222120011221 is a `hidden beast` number, since 22 + 221 + 200 + 1 + 1 + 221 = 666.

It is not a de Polignac number, because 2222120011221 - 2¹³ = 2222120003029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222120011194 and 2222120011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222120011201) 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 47 ways as a sum of consecutive naturals, for example, 42444741 + ... + 42497061.

It is an arithmetic number, because the mean of its divisors is an integer number (73194815460).

Almost surely, 2^{2222120011221} is an apocalyptic number.

It is an amenable number.

2222120011221 is a deficient number, since it is larger than the sum of its proper divisors (1291231130859).

2222120011221 is a wasteful number, since it uses less digits than its factorization.

2222120011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53778 (or 53775 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2222120011221 its reverse (1221100212222), we get a palindrome (3443220223443).

The spelling of 2222120011221 in words is "two trillion, two hundred twenty-two billion, one hundred twenty million, eleven thousand, two hundred twenty-one".