123321001099 has 2 divisors, whose sum is σ = 123321001100. Its totient is φ = 123321001098.

The previous prime is 123321001049. The next prime is 123321001123. The reversal of 123321001099 is 990100123321.

It is a strong prime.

It is an emirp because it is prime and its reverse (990100123321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123321001099 - 2⁹ = 123321000587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123321001099.

It is not a weakly prime, because it can be changed into another prime (123321001009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660500549 + 61660500550.

It is an arithmetic number, because the mean of its divisors is an integer number (61660500550).

Almost surely, 2^123321001099 is an apocalyptic number.

123321001099 is a deficient number, since it is larger than the sum of its proper divisors (1).

123321001099 is an equidigital number, since it uses as much as digits as its factorization.

123321001099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 123321001099 in words is "one hundred twenty-three billion, three hundred twenty-one million, one thousand, ninety-nine".