2820227101 has 4 divisors (see below), whose sum is σ = 2820339900. Its totient is φ = 2820114304.

The previous prime is 2820227099. The next prime is 2820227129. The reversal of 2820227101 is 1017220282.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 252778201 + 2567448900 = 15899^2 + 50670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820227101 - 2¹ = 2820227099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820227131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286 + ... + 75103.

It is an arithmetic number, because the mean of its divisors is an integer number (705084975).

Almost surely, 2^2820227101 is an apocalyptic number.

It is an amenable number.

2820227101 is a deficient number, since it is larger than the sum of its proper divisors (112799).

2820227101 is an equidigital number, since it uses as much as digits as its factorization.

2820227101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112798.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 2820227101 is about 53105.8104259788. The cubic root of 2820227101 is about 1412.8455688914.

Adding to 2820227101 its reverse (1017220282), we get a palindrome (3837447383).

The spelling of 2820227101 in words is "two billion, eight hundred twenty million, two hundred twenty-seven thousand, one hundred one".