2211221022001 has 8 divisors (see below), whose sum is σ = 2239253703680. Its totient is φ = 2183189404032.

The previous prime is 2211221021969. The next prime is 2211221022037. The reversal of 2211221022001 is 1002201221122.

It is a happy number.

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 2211221022001 - 2⁵ = 2211221021969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211221022041) 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, 4443136 + ... + 4915678.

It is an arithmetic number, because the mean of its divisors is an integer number (279906712960).

Almost surely, 2^{2211221022001} is an apocalyptic number.

It is an amenable number.

2211221022001 is a deficient number, since it is larger than the sum of its proper divisors (28032681679).

2211221022001 is an equidigital number, since it uses as much as digits as its factorization.

2211221022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531855.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211221022001 its reverse (1002201221122), we get a palindrome (3213422243123).

The spelling of 2211221022001 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, twenty-two thousand, one".