2011123061 has 2 divisors, whose sum is σ = 2011123062. Its totient is φ = 2011123060.

The previous prime is 2011123027. The next prime is 2011123073. The reversal of 2011123061 is 1603211102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1851580900 + 159542161 = 43030^2 + 12631^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011123061 - 2²² = 2006928757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011123661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005561530 + 1005561531.

It is an arithmetic number, because the mean of its divisors is an integer number (1005561531).

Almost surely, 2^2011123061 is an apocalyptic number.

It is an amenable number.

2011123061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011123061 is an equidigital number, since it uses as much as digits as its factorization.

2011123061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2011123061 is about 44845.5467242847. The cubic root of 2011123061 is about 1262.2524296573.

Adding to 2011123061 its reverse (1603211102), we get a palindrome (3614334163).

The spelling of 2011123061 in words is "two billion, eleven million, one hundred twenty-three thousand, sixty-one".