22298021 has 8 divisors (see below), whose sum is σ = 23232000. Its totient is φ = 21377520.

The previous prime is 22298011. The next prime is 22298027. The reversal of 22298021 is 12089222.

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 22298021 - 2²² = 18103717 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 (22298027) 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, 80 + ... + 6678.

It is an arithmetic number, because the mean of its divisors is an integer number (2904000).

Almost surely, 2^22298021 is an apocalyptic number.

It is an amenable number.

22298021 is a deficient number, since it is larger than the sum of its proper divisors (933979).

22298021 is a wasteful number, since it uses less digits than its factorization.

22298021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6739.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22298021 is about 4722.0780383217. The cubic root of 22298021 is about 281.4635148374.

The spelling of 22298021 in words is "twenty-two million, two hundred ninety-eight thousand, twenty-one".