1020201109 has 2 divisors, whose sum is σ = 1020201110. Its totient is φ = 1020201108.

The previous prime is 1020201079. The next prime is 1020201113. The reversal of 1020201109 is 9011020201.

1020201109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797893009 + 222308100 = 28247^2 + 14910^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020201109 - 2⁷ = 1020200981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020201092 and 1020201101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020801109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100554 + 510100555.

It is an arithmetic number, because the mean of its divisors is an integer number (510100555).

Almost surely, 2^1020201109 is an apocalyptic number.

It is an amenable number.

1020201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020201109 is an equidigital number, since it uses as much as digits as its factorization.

1020201109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1020201109 is about 31940.5871736886. The cubic root of 1020201109 is about 1006.6888623651.

The spelling of 1020201109 in words is "one billion, twenty million, two hundred one thousand, one hundred nine".