101101091 has 16 divisors (see below), whose sum is σ = 131753664. Its totient is φ = 75285504.

The previous prime is 101101087. The next prime is 101101103. The reversal of 101101091 is 190101101.

It is a happy number.

It is not a de Polignac number, because 101101091 - 2² = 101101087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101101061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31130 + ... + 34223.

It is an arithmetic number, because the mean of its divisors is an integer number (8234604).

Almost surely, 2^101101091 is an apocalyptic number.

101101091 is a deficient number, since it is larger than the sum of its proper divisors (30652573).

101101091 is a wasteful number, since it uses less digits than its factorization.

101101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65390.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 101101091 is about 10054.9038284809. The cubic root of 101101091 is about 465.8562724856.

Adding to 101101091 its reverse (190101101), we get a palindrome (291202192).

It can be divided in two parts, 1011010 and 91, that added together give a palindrome (1011101).

The spelling of 101101091 in words is "one hundred one million, one hundred one thousand, ninety-one".