1001222122201 has 128 divisors (see below), whose sum is σ = 1289594234880. Its totient is φ = 760673894400.

The previous prime is 1001222122189. The next prime is 1001222122259. The reversal of 1001222122201 is 1022212221001.

It is a happy number.

It is not a de Polignac number, because 1001222122201 - 2⁵ = 1001222122169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001222122601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7308190605 + ... + 7308190741.

It is an arithmetic number, because the mean of its divisors is an integer number (10074954960).

Almost surely, 2^{1001222122201} is an apocalyptic number.

It is an amenable number.

1001222122201 is a deficient number, since it is larger than the sum of its proper divisors (288372112679).

1001222122201 is an equidigital number, since it uses as much as digits as its factorization.

1001222122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 346 counting only the distinct ones).

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

Adding to 1001222122201 its reverse (1022212221001), we get a palindrome (2023434343202).

The spelling of 1001222122201 in words is "one trillion, one billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred one".