22220350520 has 16 divisors (see below), whose sum is σ = 49995788760. Its totient is φ = 8888140192.

The previous prime is 22220350519. The next prime is 22220350553. The reversal of 22220350520 is 2505302222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277754342 + ... + 277754421.

Almost surely, 2^22220350520 is an apocalyptic number.

22220350520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220350520 is an abundant number, since it is smaller than the sum of its proper divisors (27775438240).

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

22220350520 is a wasteful number, since it uses less digits than its factorization.

22220350520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555508774 (or 555508770 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

Adding to 22220350520 its reverse (2505302222), we get a palindrome (24725652742).

The spelling of 22220350520 in words is "twenty-two billion, two hundred twenty million, three hundred fifty thousand, five hundred twenty".