101099 has 8 divisors (see below), whose sum is σ = 113040. Its totient is φ = 89856.

The previous prime is 101089. The next prime is 101107. The reversal of 101099 is 990101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101099 - 2¹² = 97003 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167 + ... + 479.

It is an arithmetic number, because the mean of its divisors is an integer number (14130).

2¹⁰¹⁰⁹⁹ is an apocalyptic number.

101099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

101099 is a deficient number, since it is larger than the sum of its proper divisors (11941).

101099 is a wasteful number, since it uses less digits than its factorization.

101099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 101099 is about 317.9606893941. The cubic root of 101099 is about 46.5853060808.

The spelling of 101099 in words is "one hundred one thousand, ninety-nine".