2011222201 has 4 divisors (see below), whose sum is σ = 2011312512. Its totient is φ = 2011131892.

The previous prime is 2011222163. The next prime is 2011222229. The reversal of 2011222201 is 1022221102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011222201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011222271) 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 3 ways as a sum of consecutive naturals, for example, 14676 + ... + 65098.

It is an arithmetic number, because the mean of its divisors is an integer number (502828128).

Almost surely, 2^2011222201 is an apocalyptic number.

It is an amenable number.

2011222201 is a deficient number, since it is larger than the sum of its proper divisors (90311).

2011222201 is an equidigital number, since it uses as much as digits as its factorization.

2011222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90310.

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

The square root of 2011222201 is about 44846.6520601037. The cubic root of 2011222201 is about 1262.2731705809.

Adding to 2011222201 its reverse (1022221102), we get a palindrome (3033443303).

The spelling of 2011222201 in words is "two billion, eleven million, two hundred twenty-two thousand, two hundred one".