2011222011 has 4 divisors (see below), whose sum is σ = 2681629352. Its totient is φ = 1340814672.

The previous prime is 2011221973. The next prime is 2011222019. The reversal of 2011222011 is 1102221102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2011222011 - 2¹³ = 2011213819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011222019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335203666 + ... + 335203671.

It is an arithmetic number, because the mean of its divisors is an integer number (670407338).

Almost surely, 2^2011222011 is an apocalyptic number.

2011222011 is a deficient number, since it is larger than the sum of its proper divisors (670407341).

2011222011 is an equidigital number, since it uses as much as digits as its factorization.

2011222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670407340.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2011222011 is about 44846.6499417738. The cubic root of 2011222011 is about 1262.2731308320.

Adding to 2011222011 its reverse (1102221102), we get a palindrome (3113443113).

Subtracting from 2011222011 its reverse (1102221102), we obtain a palindrome (909000909).

The spelling of 2011222011 in words is "two billion, eleven million, two hundred twenty-two thousand, eleven".