101115899 has 2 divisors, whose sum is σ = 101115900. Its totient is φ = 101115898.

The previous prime is 101115871. The next prime is 101115901. The reversal of 101115899 is 998511101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101115899 is a prime.

Together with 101115901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101115809) 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, 50557949 + 50557950.

It is an arithmetic number, because the mean of its divisors is an integer number (50557950).

Almost surely, 2^101115899 is an apocalyptic number.

101115899 is a deficient number, since it is larger than the sum of its proper divisors (1).

101115899 is an equidigital number, since it uses as much as digits as its factorization.

101115899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 101115899 is about 10055.6401586373. The cubic root of 101115899 is about 465.8790156062.

The spelling of 101115899 in words is "one hundred one million, one hundred fifteen thousand, eight hundred ninety-nine".