2110021220 has 12 divisors (see below), whose sum is σ = 4431044604. Its totient is φ = 844008480.

The previous prime is 2110021211. The next prime is 2110021241. The reversal of 2110021220 is 221200112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 984955456 + 1125065764 = 31384^2 + 33542^2 .

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, 52750511 + ... + 52750550.

It is an arithmetic number, because the mean of its divisors is an integer number (369253717).

Almost surely, 2^2110021220 is an apocalyptic number.

2110021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2110021220 is an abundant number, since it is smaller than the sum of its proper divisors (2321023384).

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

2110021220 is a wasteful number, since it uses less digits than its factorization.

2110021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105501070 (or 105501068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2110021220 is about 45934.9672907253. The cubic root of 2110021220 is about 1282.6129120469.

Adding to 2110021220 its reverse (221200112), we get a palindrome (2331221332).

The spelling of 2110021220 in words is "two billion, one hundred ten million, twenty-one thousand, two hundred twenty".