2011022213 has 4 divisors (see below), whose sum is σ = 2011990668. Its totient is φ = 2010053760.

The previous prime is 2011022203. The next prime is 2011022239. The reversal of 2011022213 is 3122201102.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 562306369 + 1448715844 = 23713^2 + 38062^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011022213 - 2¹⁰ = 2011021189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011022203) 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 3 ways as a sum of consecutive naturals, for example, 481106 + ... + 485267.

It is an arithmetic number, because the mean of its divisors is an integer number (502997667).

Almost surely, 2^2011022213 is an apocalyptic number.

It is an amenable number.

2011022213 is a deficient number, since it is larger than the sum of its proper divisors (968455).

2011022213 is an equidigital number, since it uses as much as digits as its factorization.

2011022213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968454.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2011022213 is about 44844.4223176082. The cubic root of 2011022213 is about 1262.2313307063.

Adding to 2011022213 its reverse (3122201102), we get a palindrome (5133223315).

The spelling of 2011022213 in words is "two billion, eleven million, twenty-two thousand, two hundred thirteen".