101205081 has 6 divisors (see below), whose sum is σ = 146185130. Its totient is φ = 67470048.

The previous prime is 101205079. The next prime is 101205089. The reversal of 101205081 is 180502101.

It can be written as a sum of positive squares in only one way, i.e., 80192025 + 21013056 = 8955^2 + 4584^2 .

It is not a de Polignac number, because 101205081 - 2¹ = 101205079 is a prime.

It is a super-2 number, since 2×101205081² = 20484936840433122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101205089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5622496 + ... + 5622513.

Almost surely, 2^101205081 is an apocalyptic number.

It is an amenable number.

101205081 is a deficient number, since it is larger than the sum of its proper divisors (44980049).

101205081 is a wasteful number, since it uses less digits than its factorization.

101205081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11245015 (or 11245012 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 101205081 is about 10060.0736080806. The cubic root of 101205081 is about 466.0159403758.

Adding to 101205081 its reverse (180502101), we get a palindrome (281707182).

The spelling of 101205081 in words is "one hundred one million, two hundred five thousand, eighty-one".