2011020223 has 4 divisors (see below), whose sum is σ = 2011291120. Its totient is φ = 2010749328.

The previous prime is 2011020149. The next prime is 2011020227. The reversal of 2011020223 is 3220201102.

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 2011020223 - 2²¹ = 2008923071 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 (2011020227) 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, 123990 + ... + 139267.

It is an arithmetic number, because the mean of its divisors is an integer number (502822780).

Almost surely, 2^2011020223 is an apocalyptic number.

2011020223 is a deficient number, since it is larger than the sum of its proper divisors (270897).

2011020223 is an equidigital number, since it uses as much as digits as its factorization.

2011020223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270896.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2011020223 is about 44844.4001297821. The cubic root of 2011020223 is about 1262.2309143606.

Adding to 2011020223 its reverse (3220201102), we get a palindrome (5231221325).

The spelling of 2011020223 in words is "two billion, eleven million, twenty thousand, two hundred twenty-three".