22211043220 has 24 divisors (see below), whose sum is σ = 46659750984. Its totient is φ = 8881262976.

The previous prime is 22211043203. The next prime is 22211043221. The reversal of 22211043220 is 2234011222.

It can be written as a sum of positive squares in 4 ways, for example, as 66031876 + 22145011344 = 8126^2 + 148812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211043221) 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 7 ways as a sum of consecutive naturals, for example, 138987 + ... + 252466.

It is an arithmetic number, because the mean of its divisors is an integer number (1944156291).

Almost surely, 2^22211043220 is an apocalyptic number.

22211043220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211043220 is an abundant number, since it is smaller than the sum of its proper divisors (24448707764).

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

22211043220 is a wasteful number, since it uses less digits than its factorization.

22211043220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394299 (or 394297 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22211043220 its reverse (2234011222), we get a palindrome (24445054442).

The spelling of 22211043220 in words is "twenty-two billion, two hundred eleven million, forty-three thousand, two hundred twenty".