2216261100 has 72 divisors (see below), whose sum is σ = 6789596688. Its totient is φ = 556236800.

The previous prime is 2216261081. The next prime is 2216261107. The reversal of 2216261100 is 11626122.

It is not an unprimeable number, because it can be changed into a prime (2216261107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212181 + ... + 222380.

It is an arithmetic number, because the mean of its divisors is an integer number (94299954).

Almost surely, 2^2216261100 is an apocalyptic number.

2216261100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216261100 is an abundant number, since it is smaller than the sum of its proper divisors (4573335588).

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

2216261100 is a wasteful number, since it uses less digits than its factorization.

2216261100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434595 (or 434588 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2216261100 is about 47077.1823710808. The cubic root of 2216261100 is about 1303.7879852468.

Adding to 2216261100 its reverse (11626122), we get a palindrome (2227887222).

The spelling of 2216261100 in words is "two billion, two hundred sixteen million, two hundred sixty-one thousand, one hundred".