2021220130 has 8 divisors (see below), whose sum is σ = 3638196252. Its totient is φ = 808488048.

The previous prime is 2021220109. The next prime is 2021220139. The reversal of 2021220130 is 310221202.

It can be written as a sum of positive squares in 2 ways, for example, as 2007846481 + 13373649 = 44809^2 + 3657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2021220130.

It is not an unprimeable number, because it can be changed into a prime (2021220139) 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, 101060997 + ... + 101061016.

Almost surely, 2^2021220130 is an apocalyptic number.

2021220130 is a deficient number, since it is larger than the sum of its proper divisors (1616976122).

2021220130 is a wasteful number, since it uses less digits than its factorization.

2021220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202122020.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2021220130 is about 44957.9818274798. The cubic root of 2021220130 is about 1264.3613309143.

Adding to 2021220130 its reverse (310221202), we get a palindrome (2331441332).

The spelling of 2021220130 in words is "two billion, twenty-one million, two hundred twenty thousand, one hundred thirty".