2011222221201 has 12 divisors (see below), whose sum is σ = 2905130034612. Its totient is φ = 1340800381536.

The previous prime is 2011222221193. The next prime is 2011222221289. The reversal of 2011222221201 is 1021222221102.

It is a happy number.

2011222221201 is a `hidden beast` number, since 20 + 1 + 1 + 222 + 221 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 676448676225 + 1334773544976 = 822465^2 + 1155324^2 .

It is not a de Polignac number, because 2011222221201 - 2³ = 2011222221193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011222222201) 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 11 ways as a sum of consecutive naturals, for example, 283146 + ... + 2025491.

It is an arithmetic number, because the mean of its divisors is an integer number (242094169551).

Almost surely, 2^{2011222221201} is an apocalyptic number.

It is an amenable number.

2011222221201 is a deficient number, since it is larger than the sum of its proper divisors (893907813411).

2011222221201 is a wasteful number, since it uses less digits than its factorization.

2011222221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405440 (or 2405437 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2011222221201 its reverse (1021222221102), we get a palindrome (3032444442303).

Subtracting from 2011222221201 its reverse (1021222221102), we obtain a palindrome (990000000099).

The spelling of 2011222221201 in words is "two trillion, eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred one".