22221027 has 8 divisors (see below), whose sum is σ = 32920080. Its totient is φ = 14814000.

The previous prime is 22221007. The next prime is 22221029. The reversal of 22221027 is 72012222.

It is a happy number.

It is not a de Polignac number, because 22221027 - 2⁶ = 22220963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411474 + ... + 411527.

It is an arithmetic number, because the mean of its divisors is an integer number (4115010).

Almost surely, 2^22221027 is an apocalyptic number.

22221027 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22221027 is a deficient number, since it is larger than the sum of its proper divisors (10699053).

22221027 is an equidigital number, since it uses as much as digits as its factorization.

22221027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823010 (or 823004 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22221027 is about 4713.9184337449. The cubic root of 22221027 is about 281.1391812296.

Adding to 22221027 its reverse (72012222), we get a palindrome (94233249).

It can be divided in two parts, 2222 and 1027, that added together give a square (3249 = 57²).

The spelling of 22221027 in words is "twenty-two million, two hundred twenty-one thousand, twenty-seven".