2222121000001 has 8 divisors (see below), whose sum is σ = 2627138128320. Its totient is φ = 1838996689488.

The previous prime is 2222120999999. The next prime is 2222121000007. The reversal of 2222121000001 is 1000001212222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2222121000001 - 2¹ = 2222120999999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222121000007) 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, 5473204231 + ... + 5473204636.

It is an arithmetic number, because the mean of its divisors is an integer number (328392266040).

Almost surely, 2^{2222121000001} is an apocalyptic number.

It is an amenable number.

2222121000001 is a deficient number, since it is larger than the sum of its proper divisors (405017128319).

2222121000001 is a wasteful number, since it uses less digits than its factorization.

2222121000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10946408903.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2222121000001 its reverse (1000001212222), we get a palindrome (3222122212223).

The spelling of 2222121000001 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, one", and thus it is an aban number.