1002101201909 has 2 divisors, whose sum is σ = 1002101201910. Its totient is φ = 1002101201908.

The previous prime is 1002101201873. The next prime is 1002101201921. The reversal of 1002101201909 is 9091021012001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629150376100 + 372950825809 = 793190^2 + 610697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002101201909 - 2³⁶ = 933381725173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002101201929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501050600954 + 501050600955.

It is an arithmetic number, because the mean of its divisors is an integer number (501050600955).

Almost surely, 2^{1002101201909} is an apocalyptic number.

It is an amenable number.

1002101201909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002101201909 is an equidigital number, since it uses as much as digits as its factorization.

1002101201909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 1002101201909 in words is "one trillion, two billion, one hundred one million, two hundred one thousand, nine hundred nine".