2222002121221 has 8 divisors (see below), whose sum is σ = 2244657533184. Its totient is φ = 2199454336560.

The previous prime is 2222002121201. The next prime is 2222002121257. The reversal of 2222002121221 is 1221212002222.

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 2222002121221 - 2⁷ = 2222002121093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222002121201) 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 7 ways as a sum of consecutive naturals, for example, 26865325 + ... + 26947906.

It is an arithmetic number, because the mean of its divisors is an integer number (280582191648).

Almost surely, 2^{2222002121221} is an apocalyptic number.

It is an amenable number.

2222002121221 is a deficient number, since it is larger than the sum of its proper divisors (22655411963).

2222002121221 is a wasteful number, since it uses less digits than its factorization.

2222002121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53813651.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222002121221 its reverse (1221212002222), we get a palindrome (3443214123443).

The spelling of 2222002121221 in words is "two trillion, two hundred twenty-two billion, two million, one hundred twenty-one thousand, two hundred twenty-one".