21106450323 has 12 divisors (see below), whose sum is σ = 34842394288. Its totient is φ = 12060828720.

The previous prime is 21106450307. The next prime is 21106450327. The reversal of 21106450323 is 32305460112.

21106450323 is a `hidden beast` number, since 2 + 1 + 10 + 645 + 0 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 21106450323 - 2⁴ = 21106450307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21106450327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167511448 + ... + 167511573.

Almost surely, 2^21106450323 is an apocalyptic number.

21106450323 is a deficient number, since it is larger than the sum of its proper divisors (13735943965).

21106450323 is a wasteful number, since it uses less digits than its factorization.

21106450323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335023034 (or 335023031 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 21106450323 in words is "twenty-one billion, one hundred six million, four hundred fifty thousand, three hundred twenty-three".