2216081500 has 48 divisors (see below), whose sum is σ = 4996083456. Its totient is φ = 857832000.

The previous prime is 2216081467. The next prime is 2216081503. The reversal of 2216081500 is 51806122.

It is a super-2 number, since 2×2216081500² = 9822034429284500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216081503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55987 + ... + 86986.

It is an arithmetic number, because the mean of its divisors is an integer number (104085072).

Almost surely, 2^2216081500 is an apocalyptic number.

2216081500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216081500 is an abundant number, since it is smaller than the sum of its proper divisors (2780001956).

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

2216081500 is a wasteful number, since it uses less digits than its factorization.

2216081500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143023 (or 143011 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 2216081500 is about 47075.2748266009. The cubic root of 2216081500 is about 1303.7527657732.

Adding to 2216081500 its reverse (51806122), we get a palindrome (2267887622).

The spelling of 2216081500 in words is "two billion, two hundred sixteen million, eighty-one thousand, five hundred".