16510222220 has 48 divisors (see below), whose sum is σ = 35322110208. Its totient is φ = 6481214400.

The previous prime is 16510222199. The next prime is 16510222229. The reversal of 16510222220 is 2222201561.

It is not an unprimeable number, because it can be changed into a prime (16510222229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217727 + ... + 283593.

It is an arithmetic number, because the mean of its divisors is an integer number (735877296).

Almost surely, 2^16510222220 is an apocalyptic number.

16510222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16510222220 is an abundant number, since it is smaller than the sum of its proper divisors (18811887988).

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

16510222220 is a wasteful number, since it uses less digits than its factorization.

16510222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66110 (or 66108 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 16510222220 its reverse (2222201561), we get a palindrome (18732423781).

The spelling of 16510222220 in words is "sixteen billion, five hundred ten million, two hundred twenty-two thousand, two hundred twenty".