2222221202221 has 8 divisors (see below), whose sum is σ = 2246697821664. Its totient is φ = 2197793101200.

The previous prime is 2222221202203. The next prime is 2222221202269. The reversal of 2222221202221 is 1222021222222.

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 2222221202221 - 2⁹ = 2222221201709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222221202192 and 2222221202201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222221202321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12037495 + ... + 12220708.

It is an arithmetic number, because the mean of its divisors is an integer number (280837227708).

Almost surely, 2^{2222221202221} is an apocalyptic number.

It is an amenable number.

2222221202221 is a deficient number, since it is larger than the sum of its proper divisors (24476619443).

2222221202221 is a wasteful number, since it uses less digits than its factorization.

2222221202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24259211.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 2222221202221 its reverse (1222021222222), we get a palindrome (3444242424443).

The spelling of 2222221202221 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-one".