100000202020009 has 2 divisors, whose sum is σ = 100000202020010. Its totient is φ = 100000202020008.

The previous prime is 100000202019979. The next prime is 100000202020063. The reversal of 100000202020009 is 900020202000001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79792057369600 + 20208144650409 = 8932640^2 + 4495347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100000202020009 is a prime.

It is a super-2 number, since 2×100000202020009² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100000202019974 and 100000202020001.

It is not a weakly prime, because it can be changed into another prime (100000202020409) 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, 50000101010004 + 50000101010005.

It is an arithmetic number, because the mean of its divisors is an integer number (50000101010005).

Almost surely, 2^{100000202020009} is an apocalyptic number.

It is an amenable number.

100000202020009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000202020009 is an equidigital number, since it uses as much as digits as its factorization.

100000202020009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The spelling of 100000202020009 in words is "one hundred trillion, two hundred two million, twenty thousand, nine".