22221024 has 96 divisors (see below), whose sum is σ = 68302080. Its totient is φ = 6193152.

The previous prime is 22221007. The next prime is 22221029. The reversal of 22221024 is 42012222.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 22220994 and 22221012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221029) 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, 28512 + ... + 29280.

It is an arithmetic number, because the mean of its divisors is an integer number (711480).

Almost surely, 2^22221024 is an apocalyptic number.

22221024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34151040).

22221024 is an abundant number, since it is smaller than the sum of its proper divisors (46081056).

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

22221024 is a wasteful number, since it uses less digits than its factorization.

22221024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22221024 is about 4713.9181155383. The cubic root of 22221024 is about 281.1391685776.

Adding to 22221024 its reverse (42012222), we get a palindrome (64233246).

The spelling of 22221024 in words is "twenty-two million, two hundred twenty-one thousand, twenty-four".