100001222100509 has 2 divisors, whose sum is σ = 100001222100510. Its totient is φ = 100001222100508.

The previous prime is 100001222100443. The next prime is 100001222100551. The reversal of 100001222100509 is 905001222100001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88988978959609 + 11012243140900 = 9433397^2 + 3318470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100001222100509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100001222106509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000611050254 + 50000611050255.

It is an arithmetic number, because the mean of its divisors is an integer number (50000611050255).

Almost surely, 2^{100001222100509} is an apocalyptic number.

It is an amenable number.

100001222100509 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001222100509 is an equidigital number, since it uses as much as digits as its factorization.

100001222100509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 100001222100509 in words is "one hundred trillion, one billion, two hundred twenty-two million, one hundred thousand, five hundred nine".