123020011 has 2 divisors, whose sum is σ = 123020012. Its totient is φ = 123020010.

The previous prime is 123019991. The next prime is 123020047. The reversal of 123020011 is 110020321.

It is a weak prime.

It is an emirp because it is prime and its reverse (110020321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123020011 - 2⁵ = 123019979 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123020011.

It is not a weakly prime, because it can be changed into another prime (123020311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510005 + 61510006.

It is an arithmetic number, because the mean of its divisors is an integer number (61510006).

Almost surely, 2^123020011 is an apocalyptic number.

123020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020011 is an equidigital number, since it uses as much as digits as its factorization.

123020011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 123020011 is about 11091.4386352718. The cubic root of 123020011 is about 497.3459516481.

Adding to 123020011 its reverse (110020321), we get a palindrome (233040332).

The spelling of 123020011 in words is "one hundred twenty-three million, twenty thousand, eleven".