123235221007 has 2 divisors, whose sum is σ = 123235221008. Its totient is φ = 123235221006.

The previous prime is 123235220993. The next prime is 123235221077. The reversal of 123235221007 is 700122532321.

It is a weak prime.

It is an emirp because it is prime and its reverse (700122532321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123235221007 - 2¹⁵ = 123235188239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123235221077) 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, 61617610503 + 61617610504.

It is an arithmetic number, because the mean of its divisors is an integer number (61617610504).

Almost surely, 2^123235221007 is an apocalyptic number.

123235221007 is a deficient number, since it is larger than the sum of its proper divisors (1).

123235221007 is an equidigital number, since it uses as much as digits as its factorization.

123235221007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 123235221007 its reverse (700122532321), we get a palindrome (823357753328).

The spelling of 123235221007 in words is "one hundred twenty-three billion, two hundred thirty-five million, two hundred twenty-one thousand, seven".