2011223331 has 32 divisors (see below), whose sum is σ = 3221137920. Its totient is φ = 1232913312.

The previous prime is 2011223323. The next prime is 2011223371. The reversal of 2011223331 is 1333221102.

It is not a de Polignac number, because 2011223331 - 2³ = 2011223323 is a prime.

It is a super-2 number, since 2×2011223331² = 8090038574317471122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2011223371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81420 + ... + 103206.

It is an arithmetic number, because the mean of its divisors is an integer number (100660560).

Almost surely, 2^2011223331 is an apocalyptic number.

2011223331 is a deficient number, since it is larger than the sum of its proper divisors (1209914589).

2011223331 is a wasteful number, since it uses less digits than its factorization.

2011223331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22072 (or 22066 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2011223331 is about 44846.6646585897. The cubic root of 2011223331 is about 1262.2734069825.

Adding to 2011223331 its reverse (1333221102), we get a palindrome (3344444433).

The spelling of 2011223331 in words is "two billion, eleven million, two hundred twenty-three thousand, three hundred thirty-one".