21227362 has 32 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 9242688.

The previous prime is 21227357. The next prime is 21227363. The reversal of 21227362 is 26372212.

It is not an unprimeable number, because it can be changed into a prime (21227363) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35139 + ... + 35737.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^21227362 is an apocalyptic number.

21227362 is a deficient number, since it is larger than the sum of its proper divisors (15060638).

21227362 is a wasteful number, since it uses less digits than its factorization.

21227362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its digits is 2016, while the sum is 25.

The square root of 21227362 is about 4607.3161384910. The cubic root of 21227362 is about 276.8845196278.

Adding to 21227362 its reverse (26372212), we get a palindrome (47599574).

The spelling of 21227362 in words is "twenty-one million, two hundred twenty-seven thousand, three hundred sixty-two".