101689099 has 2 divisors, whose sum is σ = 101689100. Its totient is φ = 101689098.

The previous prime is 101689097. The next prime is 101689117. The reversal of 101689099 is 990986101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101689099 - 2¹ = 101689097 is a prime.

Together with 101689097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (101689097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50844549 + 50844550.

It is an arithmetic number, because the mean of its divisors is an integer number (50844550).

Almost surely, 2^101689099 is an apocalyptic number.

101689099 is a deficient number, since it is larger than the sum of its proper divisors (1).

101689099 is an equidigital number, since it uses as much as digits as its factorization.

101689099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 101689099 is about 10084.1012985789. The cubic root of 101689099 is about 466.7576734643.

The spelling of 101689099 in words is "one hundred one million, six hundred eighty-nine thousand, ninety-nine".