101020011091 has 8 divisors (see below), whose sum is σ = 106340735120. Its totient is φ = 95699675232.

The previous prime is 101020011083. The next prime is 101020011097. The reversal of 101020011091 is 190110020101.

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 101020011091 - 2³ = 101020011083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101020011097) 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, 546721 + ... + 707773.

It is an arithmetic number, because the mean of its divisors is an integer number (13292591890).

Almost surely, 2^101020011091 is an apocalyptic number.

101020011091 is a deficient number, since it is larger than the sum of its proper divisors (5320724029).

101020011091 is a wasteful number, since it uses less digits than its factorization.

101020011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194085.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 101020011091 its reverse (190110020101), we get a palindrome (291130031192).

The spelling of 101020011091 in words is "one hundred one billion, twenty million, eleven thousand, ninety-one".