100101321209 has 2 divisors, whose sum is σ = 100101321210. Its totient is φ = 100101321208.

The previous prime is 100101321179. The next prime is 100101321259. The reversal of 100101321209 is 902123101001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98975047609 + 1126273600 = 314603^2 + 33560^2 .

It is an emirp because it is prime and its reverse (902123101001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100101321209 is a prime.

It is not a weakly prime, because it can be changed into another prime (100101321259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050660604 + 50050660605.

It is an arithmetic number, because the mean of its divisors is an integer number (50050660605).

Almost surely, 2^100101321209 is an apocalyptic number.

It is an amenable number.

100101321209 is a deficient number, since it is larger than the sum of its proper divisors (1).

100101321209 is an equidigital number, since it uses as much as digits as its factorization.

100101321209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 100101321209 in words is "one hundred billion, one hundred one million, three hundred twenty-one thousand, two hundred nine".