22221102340 has 12 divisors (see below), whose sum is σ = 46664314956. Its totient is φ = 8888440928.

The previous prime is 22221102329. The next prime is 22221102341. The reversal of 22221102340 is 4320112222.

It can be written as a sum of positive squares in 2 ways, for example, as 2755830016 + 19465272324 = 52496^2 + 139518^2 .

It is not an unprimeable number, because it can be changed into a prime (22221102341) 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, 555527539 + ... + 555527578.

It is an arithmetic number, because the mean of its divisors is an integer number (3888692913).

Almost surely, 2^22221102340 is an apocalyptic number.

22221102340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221102340 is an abundant number, since it is smaller than the sum of its proper divisors (24443212616).

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

22221102340 is a wasteful number, since it uses less digits than its factorization.

22221102340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111055126 (or 1111055124 counting only the distinct ones).

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

Adding to 22221102340 its reverse (4320112222), we get a palindrome (26541214562).

The spelling of 22221102340 in words is "twenty-two billion, two hundred twenty-one million, one hundred two thousand, three hundred forty".