2011005223 has 4 divisors (see below), whose sum is σ = 2019017448. Its totient is φ = 2002993000.

The previous prime is 2011005221. The next prime is 2011005229. The reversal of 2011005223 is 3225001102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011005223 - 2¹ = 2011005221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011005197 and 2011005206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011005221) 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, 4005736 + ... + 4006237.

It is an arithmetic number, because the mean of its divisors is an integer number (504754362).

Almost surely, 2^2011005223 is an apocalyptic number.

2011005223 is a deficient number, since it is larger than the sum of its proper divisors (8012225).

2011005223 is an equidigital number, since it uses as much as digits as its factorization.

2011005223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8012224.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2011005223 is about 44844.2328845081. The cubic root of 2011005223 is about 1262.2277760678.

Adding to 2011005223 its reverse (3225001102), we get a palindrome (5236006325).

The spelling of 2011005223 in words is "two billion, eleven million, five thousand, two hundred twenty-three".