2011133123 has 2 divisors, whose sum is σ = 2011133124. Its totient is φ = 2011133122.

The previous prime is 2011133119. The next prime is 2011133129. The reversal of 2011133123 is 3213311102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011133123 - 2² = 2011133119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2011133129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005566561 + 1005566562.

It is an arithmetic number, because the mean of its divisors is an integer number (1005566562).

Almost surely, 2^2011133123 is an apocalyptic number.

2011133123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011133123 is an equidigital number, since it uses as much as digits as its factorization.

2011133123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2011133123 is about 44845.6589091966. The cubic root of 2011133123 is about 1262.2545347436.

Adding to 2011133123 its reverse (3213311102), we get a palindrome (5224444225).

The spelling of 2011133123 in words is "two billion, eleven million, one hundred thirty-three thousand, one hundred twenty-three".