2011121323 has 2 divisors, whose sum is σ = 2011121324. Its totient is φ = 2011121322.

The previous prime is 2011121317. The next prime is 2011121351. The reversal of 2011121323 is 3231211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011121323 - 2¹⁷ = 2010990251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011121297 and 2011121306.

It is not a weakly prime, because it can be changed into another prime (2011121423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005560661 + 1005560662.

It is an arithmetic number, because the mean of its divisors is an integer number (1005560662).

Almost surely, 2^2011121323 is an apocalyptic number.

2011121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011121323 is an equidigital number, since it uses as much as digits as its factorization.

2011121323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2011121323 is about 44845.5273466597. The cubic root of 2011121323 is about 1262.2520660469.

Adding to 2011121323 its reverse (3231211102), we get a palindrome (5242332425).

The spelling of 2011121323 in words is "two billion, eleven million, one hundred twenty-one thousand, three hundred twenty-three".