123321019001 has 2 divisors, whose sum is σ = 123321019002. Its totient is φ = 123321019000.

The previous prime is 123321018943. The next prime is 123321019007. The reversal of 123321019001 is 100910123321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116792379001 + 6528640000 = 341749^2 + 80800^2 .

It is a cyclic number.

It is not a de Polignac number, because 123321019001 - 2⁶ = 123321018937 is a prime.

It is not a weakly prime, because it can be changed into another prime (123321019007) 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, 61660509500 + 61660509501.

It is an arithmetic number, because the mean of its divisors is an integer number (61660509501).

Almost surely, 2^123321019001 is an apocalyptic number.

It is an amenable number.

123321019001 is a deficient number, since it is larger than the sum of its proper divisors (1).

123321019001 is an equidigital number, since it uses as much as digits as its factorization.

123321019001 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 23.

The spelling of 123321019001 in words is "one hundred twenty-three billion, three hundred twenty-one million, nineteen thousand, one".