66011123 has 2 divisors, whose sum is σ = 66011124. Its totient is φ = 66011122.

The previous prime is 66011093. The next prime is 66011131. The reversal of 66011123 is 32111066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66011123 - 2¹⁴ = 65994739 is a prime.

It is a super-2 number, since 2×66011123² = 8714936719442258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66011095 and 66011104.

It is not a weakly prime, because it can be changed into another prime (66011723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33005561 + 33005562.

It is an arithmetic number, because the mean of its divisors is an integer number (33005562).

Almost surely, 2^66011123 is an apocalyptic number.

66011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66011123 is an equidigital number, since it uses as much as digits as its factorization.

66011123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 66011123 is about 8124.7229491226. The cubic root of 66011123 is about 404.1467031672.

Adding to 66011123 its reverse (32111066), we get a palindrome (98122189).

The spelling of 66011123 in words is "sixty-six million, eleven thousand, one hundred twenty-three".