22095821 has 8 divisors (see below), whose sum is σ = 24331104. Its totient is φ = 19898320.

The previous prime is 22095817. The next prime is 22095823. The reversal of 22095821 is 12859022.

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

It is a cyclic number.

It is not a de Polignac number, because 22095821 - 2² = 22095817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22095823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8210 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (3041388).

Almost surely, 2^22095821 is an apocalyptic number.

It is an amenable number.

22095821 is a deficient number, since it is larger than the sum of its proper divisors (2235283).

22095821 is a wasteful number, since it uses less digits than its factorization.

22095821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18891.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 22095821 is about 4700.6192145291. The cubic root of 22095821 is about 280.6101532812.

The spelling of 22095821 in words is "twenty-two million, ninety-five thousand, eight hundred twenty-one".