22021352 has 8 divisors (see below), whose sum is σ = 41290050. Its totient is φ = 11010672.

The previous prime is 22021331. The next prime is 22021357. The reversal of 22021352 is 25312022.

It can be written as a sum of positive squares in only one way, i.e., 14546596 + 7474756 = 3814^2 + 2734^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22021352.

It is not an unprimeable number, because it can be changed into a prime (22021357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1376327 + ... + 1376342.

Almost surely, 2^22021352 is an apocalyptic number.

It is an amenable number.

22021352 is a deficient number, since it is larger than the sum of its proper divisors (19268698).

22021352 is a wasteful number, since it uses less digits than its factorization.

22021352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752675 (or 2752671 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22021352 is about 4692.6913386670. The cubic root of 22021352 is about 280.2945539725.

Adding to 22021352 its reverse (25312022), we get a palindrome (47333374).

The spelling of 22021352 in words is "twenty-two million, twenty-one thousand, three hundred fifty-two".