101011005605 has 4 divisors (see below), whose sum is σ = 121213206732. Its totient is φ = 80808804480.

The previous prime is 101011005577. The next prime is 101011005629. The reversal of 101011005605 is 506500110101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63980161249 + 37030844356 = 252943^2 + 192434^2 .

It is not a de Polignac number, because 101011005605 - 2⁶ = 101011005541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10101100556 + ... + 10101100565.

It is an arithmetic number, because the mean of its divisors is an integer number (30303301683).

Almost surely, 2^101011005605 is an apocalyptic number.

It is an amenable number.

101011005605 is a deficient number, since it is larger than the sum of its proper divisors (20202201127).

101011005605 is an equidigital number, since it uses as much as digits as its factorization.

101011005605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202201126.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 101011005605 its reverse (506500110101), we get a palindrome (607511115706).

The spelling of 101011005605 in words is "one hundred one billion, eleven million, five thousand, six hundred five".