22221352 has 8 divisors (see below), whose sum is σ = 41665050. Its totient is φ = 11110672.

The previous prime is 22221343. The next prime is 22221359. The reversal of 22221352 is 25312222.

It can be written as a sum of positive squares in only one way, i.e., 12574116 + 9647236 = 3546^2 + 3106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (22221359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388827 + ... + 1388842.

Almost surely, 2^22221352 is an apocalyptic number.

It is an amenable number.

22221352 is a deficient number, since it is larger than the sum of its proper divisors (19443698).

22221352 is a wasteful number, since it uses less digits than its factorization.

22221352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777675 (or 2777671 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 22221352 is about 4713.9529060015. The cubic root of 22221352 is about 281.1405518501.

Adding to 22221352 its reverse (25312222), we get a palindrome (47533574).

The spelling of 22221352 in words is "twenty-two million, two hundred twenty-one thousand, three hundred fifty-two".