101000081 has 8 divisors (see below), whose sum is σ = 124307904. Its totient is φ = 79912080.

The previous prime is 101000059. The next prime is 101000093. The reversal of 101000081 is 180000101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101000081 is a prime.

It is a super-2 number, since 2×101000081² = 20402032724013122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101000051) 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, 554855 + ... + 555036.

It is an arithmetic number, because the mean of its divisors is an integer number (15538488).

Almost surely, 2^101000081 is an apocalyptic number.

It is an amenable number.

101000081 is a deficient number, since it is larger than the sum of its proper divisors (23307823).

101000081 is a wasteful number, since it uses less digits than its factorization.

101000081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109911.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 101000081 is about 10049.8796510207. The cubic root of 101000081 is about 465.7010752747.

Adding to 101000081 its reverse (180000101), we get a palindrome (281000182).

The spelling of 101000081 in words is "one hundred one million, eighty-one", and thus it is an aban number.