1109642201 has 2 divisors, whose sum is σ = 1109642202. Its totient is φ = 1109642200.

The previous prime is 1109642101. The next prime is 1109642227. The reversal of 1109642201 is 1022469011.

It is an a-pointer prime, because the next prime (1109642227) can be obtained adding 1109642201 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690375625 + 419266576 = 26275^2 + 20476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109642201 - 2¹⁰ = 1109641177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109642231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554821100 + 554821101.

It is an arithmetic number, because the mean of its divisors is an integer number (554821101).

Almost surely, 2^1109642201 is an apocalyptic number.

It is an amenable number.

1109642201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109642201 is an equidigital number, since it uses as much as digits as its factorization.

1109642201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1109642201 is about 33311.2923946220. The cubic root of 1109642201 is about 1035.2875428449.

The spelling of 1109642201 in words is "one billion, one hundred nine million, six hundred forty-two thousand, two hundred one".