22300021 has 4 divisors (see below), whose sum is σ = 22361152. Its totient is φ = 22238892.

The previous prime is 22300013. The next prime is 22300027. The reversal of 22300021 is 12000322.

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 not a de Polignac number, because 22300021 - 2³ = 22300013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22299980 and 22300007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22300027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30015 + ... + 30748.

It is an arithmetic number, because the mean of its divisors is an integer number (5590288).

Almost surely, 2^22300021 is an apocalyptic number.

It is an amenable number.

22300021 is a deficient number, since it is larger than the sum of its proper divisors (61131).

22300021 is an equidigital number, since it uses as much as digits as its factorization.

22300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61130.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22300021 is about 4722.2898047452. The cubic root of 22300021 is about 281.4719297875.

Adding to 22300021 its reverse (12000322), we get a palindrome (34300343).

The spelling of 22300021 in words is "twenty-two million, three hundred thousand, twenty-one".