22001332 has 12 divisors (see below), whose sum is σ = 40767300. Its totient is φ = 10353536.

The previous prime is 22001327. The next prime is 22001333. The reversal of 22001332 is 23310022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13498276 + 8503056 = 3674^2 + 2916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161707 + ... + 161842.

It is an arithmetic number, because the mean of its divisors is an integer number (3397275).

Almost surely, 2^22001332 is an apocalyptic number.

It is an amenable number.

22001332 is a deficient number, since it is larger than the sum of its proper divisors (18765968).

22001332 is a wasteful number, since it uses less digits than its factorization.

22001332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323570 (or 323568 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22001332 is about 4690.5577493513. The cubic root of 22001332 is about 280.2095879762.

Adding to 22001332 its reverse (23310022), we get a palindrome (45311354).

The spelling of 22001332 in words is "twenty-two million, one thousand, three hundred thirty-two".