101001001187 has 2 divisors, whose sum is σ = 101001001188. Its totient is φ = 101001001186.

The previous prime is 101001001139. The next prime is 101001001201. The reversal of 101001001187 is 781100100101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101001001187 - 2⁸ = 101001000931 is a prime.

It is not a weakly prime, because it can be changed into another prime (101001001487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500500593 + 50500500594.

It is an arithmetic number, because the mean of its divisors is an integer number (50500500594).

Almost surely, 2^101001001187 is an apocalyptic number.

101001001187 is a deficient number, since it is larger than the sum of its proper divisors (1).

101001001187 is an equidigital number, since it uses as much as digits as its factorization.

101001001187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 101001001187 its reverse (781100100101), we get a palindrome (882101101288).

The spelling of 101001001187 in words is "one hundred one billion, one million, one thousand, one hundred eighty-seven".