123123021293 has 2 divisors, whose sum is σ = 123123021294. Its totient is φ = 123123021292.

The previous prime is 123123021173. The next prime is 123123021313. The reversal of 123123021293 is 392120321321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61788536329 + 61334484964 = 248573^2 + 247658^2 .

It is an emirp because it is prime and its reverse (392120321321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123123021293 - 2⁸ = 123123021037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123123023293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561510646 + 61561510647.

It is an arithmetic number, because the mean of its divisors is an integer number (61561510647).

Almost surely, 2^123123021293 is an apocalyptic number.

It is an amenable number.

123123021293 is a deficient number, since it is larger than the sum of its proper divisors (1).

123123021293 is an equidigital number, since it uses as much as digits as its factorization.

123123021293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 123123021293 in words is "one hundred twenty-three billion, one hundred twenty-three million, twenty-one thousand, two hundred ninety-three".