22026521 has 16 divisors (see below), whose sum is σ = 24624000. Its totient is φ = 19536000.

The previous prime is 22026517. The next prime is 22026541. The reversal of 22026521 is 12562022.

It is not a de Polignac number, because 22026521 - 2² = 22026517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22026493 and 22026502.

It is not an unprimeable number, because it can be changed into a prime (22026541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145796 + ... + 145946.

It is an arithmetic number, because the mean of its divisors is an integer number (1539000).

Almost surely, 2^22026521 is an apocalyptic number.

It is an amenable number.

22026521 is a deficient number, since it is larger than the sum of its proper divisors (2597479).

22026521 is a wasteful number, since it uses less digits than its factorization.

22026521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22026521 is about 4693.2420564041. The cubic root of 22026521 is about 280.3164831317.

Adding to 22026521 its reverse (12562022), we get a palindrome (34588543).

The spelling of 22026521 in words is "twenty-two million, twenty-six thousand, five hundred twenty-one".