22521016 has 32 divisors (see below), whose sum is σ = 48428640. Its totient is φ = 9618048.

The previous prime is 22520999. The next prime is 22521041. The reversal of 22521016 is 61012522.

It is a junction number, because it is equal to n+sod(n) for n = 22520984 and 22521002.

It is a congruent number.

It is an unprimeable number.

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, 21726 + ... + 22738.

It is an arithmetic number, because the mean of its divisors is an integer number (1513395).

Almost surely, 2^22521016 is an apocalyptic number.

It is an amenable number.

22521016 is an abundant number, since it is smaller than the sum of its proper divisors (25907624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22521016 is a wasteful number, since it uses less digits than its factorization.

22521016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 22521016 is about 4745.6312541115. The cubic root of 22521016 is about 282.3986782594.

Adding to 22521016 its reverse (61012522), we get a palindrome (83533538).

The spelling of 22521016 in words is "twenty-two million, five hundred twenty-one thousand, sixteen".