2110311220 has 12 divisors (see below), whose sum is σ = 4431653604. Its totient is φ = 844124480.

The previous prime is 2110311199. The next prime is 2110311223. The reversal of 2110311220 is 221130112.

It can be written as a sum of positive squares in 2 ways, for example, as 1464439824 + 645871396 = 38268^2 + 25414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2110311220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110311223) by changing a digit.

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, 52757761 + ... + 52757800.

It is an arithmetic number, because the mean of its divisors is an integer number (369304467).

Almost surely, 2^2110311220 is an apocalyptic number.

2110311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2110311220 is an abundant number, since it is smaller than the sum of its proper divisors (2321342384).

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

2110311220 is a wasteful number, since it uses less digits than its factorization.

2110311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105515570 (or 105515568 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2110311220 is about 45938.1238188936. The cubic root of 2110311220 is about 1282.6716698612.

Adding to 2110311220 its reverse (221130112), we get a palindrome (2331441332).

It can be divided in two parts, 21103 and 11220, that added together give a palindrome (32323).

The spelling of 2110311220 in words is "two billion, one hundred ten million, three hundred eleven thousand, two hundred twenty".