22026021 has 4 divisors (see below), whose sum is σ = 29368032. Its totient is φ = 14684012.

The previous prime is 22026013. The next prime is 22026031. The reversal of 22026021 is 12062022.

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 22026021 - 2³ = 22026013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22026031) 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, 3671001 + ... + 3671006.

It is an arithmetic number, because the mean of its divisors is an integer number (7342008).

Almost surely, 2^22026021 is an apocalyptic number.

It is an amenable number.

22026021 is a deficient number, since it is larger than the sum of its proper divisors (7342011).

22026021 is an equidigital number, since it uses as much as digits as its factorization.

22026021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22026021 is about 4693.1887880204. The cubic root of 22026021 is about 280.3143620629.

Adding to 22026021 its reverse (12062022), we get a palindrome (34088043).

The spelling of 22026021 in words is "twenty-two million, twenty-six thousand, twenty-one".