2211122213 has 4 divisors (see below), whose sum is σ = 2282448768. Its totient is φ = 2139795660.

The previous prime is 2211122171. The next prime is 2211122239. The reversal of 2211122213 is 3122211122.

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.

It is a cyclic number.

It is not a de Polignac number, because 2211122213 - 2⁶ = 2211122149 is a prime.

It is a super-2 number, since 2×2211122213² = 9778122881644034738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211122191 and 2211122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211122113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35663231 + ... + 35663292.

It is an arithmetic number, because the mean of its divisors is an integer number (570612192).

Almost surely, 2^2211122213 is an apocalyptic number.

It is an amenable number.

2211122213 is a deficient number, since it is larger than the sum of its proper divisors (71326555).

2211122213 is an equidigital number, since it uses as much as digits as its factorization.

2211122213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71326554.

The product of its digits is 96, while the sum is 17.

The square root of 2211122213 is about 47022.5713142104. The cubic root of 2211122213 is about 1302.7794993338.

Adding to 2211122213 its reverse (3122211122), we get a palindrome (5333333335).

The spelling of 2211122213 in words is "two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred thirteen".