2001101189 has 2 divisors, whose sum is σ = 2001101190. Its totient is φ = 2001101188.

The previous prime is 2001101159. The next prime is 2001101209. The reversal of 2001101189 is 9811011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1343589025 + 657512164 = 36655^2 + 25642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001101189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001101159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000550594 + 1000550595.

It is an arithmetic number, because the mean of its divisors is an integer number (1000550595).

Almost surely, 2^2001101189 is an apocalyptic number.

It is an amenable number.

2001101189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001101189 is an equidigital number, since it uses as much as digits as its factorization.

2001101189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 2001101189 is about 44733.6695230785. The cubic root of 2001101189 is about 1260.1522426691.

The spelling of 2001101189 in words is "two billion, one million, one hundred one thousand, one hundred eighty-nine".