123020312011 has 2 divisors, whose sum is σ = 123020312012. Its totient is φ = 123020312010.

The previous prime is 123020311993. The next prime is 123020312029. The reversal of 123020312011 is 110213020321.

It is a balanced prime because it is at equal distance from previous prime (123020311993) and next prime (123020312029).

It is an emirp because it is prime and its reverse (110213020321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123020312011 - 2⁵ = 123020311979 is a prime.

It is not a weakly prime, because it can be changed into another prime (123020310011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510156005 + 61510156006.

It is an arithmetic number, because the mean of its divisors is an integer number (61510156006).

Almost surely, 2^123020312011 is an apocalyptic number.

123020312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020312011 is an equidigital number, since it uses as much as digits as its factorization.

123020312011 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.

Adding to 123020312011 its reverse (110213020321), we get a palindrome (233233332332).

The spelling of 123020312011 in words is "one hundred twenty-three billion, twenty million, three hundred twelve thousand, eleven".