21106170341 has 4 divisors (see below), whose sum is σ = 21127469184. Its totient is φ = 21084871500.

The previous prime is 21106170331. The next prime is 21106170377. The reversal of 21106170341 is 14307160112.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21106170341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21106170341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21106170331) by changing a digit.

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, 10647935 + ... + 10649916.

It is an arithmetic number, because the mean of its divisors is an integer number (5281867296).

Almost surely, 2^21106170341 is an apocalyptic number.

It is an amenable number.

21106170341 is a deficient number, since it is larger than the sum of its proper divisors (21298843).

21106170341 is an equidigital number, since it uses as much as digits as its factorization.

21106170341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21298842.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 21106170341 in words is "twenty-one billion, one hundred six million, one hundred seventy thousand, three hundred forty-one".