123242213513 has 2 divisors, whose sum is σ = 123242213514. Its totient is φ = 123242213512.

The previous prime is 123242213509. The next prime is 123242213533. The reversal of 123242213513 is 315312242321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83135342224 + 40106871289 = 288332^2 + 200267^2 .

It is a cyclic number.

It is not a de Polignac number, because 123242213513 - 2² = 123242213509 is a prime.

It is not a weakly prime, because it can be changed into another prime (123242213533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621106756 + 61621106757.

It is an arithmetic number, because the mean of its divisors is an integer number (61621106757).

Almost surely, 2^123242213513 is an apocalyptic number.

It is an amenable number.

123242213513 is a deficient number, since it is larger than the sum of its proper divisors (1).

123242213513 is an equidigital number, since it uses as much as digits as its factorization.

123242213513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

Adding to 123242213513 its reverse (315312242321), we get a palindrome (438554455834).

The spelling of 123242213513 in words is "one hundred twenty-three billion, two hundred forty-two million, two hundred thirteen thousand, five hundred thirteen".