22211324442 has 40 divisors (see below), whose sum is σ = 51114963636. Its totient is φ = 7203670848.

The previous prime is 22211324441. The next prime is 22211324491. The reversal of 22211324442 is 24442311222.

It is a happy number.

22211324442 is a `hidden beast` number, since 2 + 2 + 211 + 3 + 2 + 4 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21916137681 + 295186761 = 148041^2 + 17181^2 .

It is a super-2 number, since 2×22211324442² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22211324441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1846803 + ... + 1858790.

Almost surely, 2^22211324442 is an apocalyptic number.

22211324442 is an abundant number, since it is smaller than the sum of its proper divisors (28903639194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211324442 is a wasteful number, since it uses less digits than its factorization.

22211324442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705644 (or 3705635 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

Adding to 22211324442 its reverse (24442311222), we get a palindrome (46653635664).

The spelling of 22211324442 in words is "twenty-two billion, two hundred eleven million, three hundred twenty-four thousand, four hundred forty-two".