123213331001 has 2 divisors, whose sum is σ = 123213331002. Its totient is φ = 123213331000.

The previous prime is 123213330991. The next prime is 123213331013. The reversal of 123213331001 is 100133312321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92384994601 + 30828336400 = 303949^2 + 175580^2 .

It is a cyclic number.

It is not a de Polignac number, because 123213331001 - 2¹⁴ = 123213314617 is a prime.

It is not a weakly prime, because it can be changed into another prime (123213331081) 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 as a sum of consecutive naturals, namely, 61606665500 + 61606665501.

It is an arithmetic number, because the mean of its divisors is an integer number (61606665501).

Almost surely, 2^123213331001 is an apocalyptic number.

It is an amenable number.

123213331001 is a deficient number, since it is larger than the sum of its proper divisors (1).

123213331001 is an equidigital number, since it uses as much as digits as its factorization.

123213331001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123213331001 its reverse (100133312321), we get a palindrome (223346643322).

The spelling of 123213331001 in words is "one hundred twenty-three billion, two hundred thirteen million, three hundred thirty-one thousand, one".