2011120123 has 2 divisors, whose sum is σ = 2011120124. Its totient is φ = 2011120122.

The previous prime is 2011120117. The next prime is 2011120157. The reversal of 2011120123 is 3210211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011120123 - 2⁹ = 2011119611 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011120103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005560061 + 1005560062.

It is an arithmetic number, because the mean of its divisors is an integer number (1005560062).

Almost surely, 2^2011120123 is an apocalyptic number.

2011120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011120123 is an equidigital number, since it uses as much as digits as its factorization.

2011120123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2011120123 is about 44845.5139673970. The cubic root of 2011120123 is about 1262.2518149925.

Adding to 2011120123 its reverse (3210211102), we get a palindrome (5221331225).

The spelling of 2011120123 in words is "two billion, eleven million, one hundred twenty thousand, one hundred twenty-three".