123021301 has 4 divisors (see below), whose sum is σ = 132484492. Its totient is φ = 113558112.

The previous prime is 123021293. The next prime is 123021307. The reversal of 123021301 is 103120321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103120321 = 43 ⋅2398147.

It can be written as a sum of positive squares in 2 ways, for example, as 26471025 + 96550276 = 5145^2 + 9826^2 .

It is a cyclic number.

It is not a de Polignac number, because 123021301 - 2³ = 123021293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9463177 = 123021301 / (1 + 2 + 3 + 0 + 2 + 1 + 3 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123021307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731576 + ... + 4731601.

It is an arithmetic number, because the mean of its divisors is an integer number (33121123).

Almost surely, 2^123021301 is an apocalyptic number.

It is an amenable number.

123021301 is a deficient number, since it is larger than the sum of its proper divisors (9463191).

123021301 is an equidigital number, since it uses as much as digits as its factorization.

123021301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463190.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 123021301 is about 11091.4967880805. The cubic root of 123021301 is about 497.3476900483.

Adding to 123021301 its reverse (103120321), we get a palindrome (226141622).

The spelling of 123021301 in words is "one hundred twenty-three million, twenty-one thousand, three hundred one".