101085506081 has 4 divisors (see below), whose sum is σ = 115526292672. Its totient is φ = 86644719492.

The previous prime is 101085505951. The next prime is 101085506111. The reversal of 101085506081 is 180605580101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180605580101 = 17 ⋅10623857653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101085506081 is a prime.

It is a super-2 number, since 2×101085506081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101085502081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7220393285 + ... + 7220393298.

It is an arithmetic number, because the mean of its divisors is an integer number (28881573168).

Almost surely, 2^101085506081 is an apocalyptic number.

It is an amenable number.

101085506081 is a deficient number, since it is larger than the sum of its proper divisors (14440786591).

101085506081 is an equidigital number, since it uses as much as digits as its factorization.

101085506081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14440786590.

The product of its (nonzero) digits is 9600, while the sum is 35.

The spelling of 101085506081 in words is "one hundred one billion, eighty-five million, five hundred six thousand, eighty-one".