2820220628271 has 4 divisors (see below), whose sum is σ = 3760294171032. Its totient is φ = 1880147085512.

The previous prime is 2820220628261. The next prime is 2820220628273. The reversal of 2820220628271 is 1728260220282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2820220628271 - 2⁹ = 2820220627759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820220628273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470036771376 + ... + 470036771381.

It is an arithmetic number, because the mean of its divisors is an integer number (940073542758).

Almost surely, 2^{2820220628271} is an apocalyptic number.

2820220628271 is a deficient number, since it is larger than the sum of its proper divisors (940073542761).

2820220628271 is an equidigital number, since it uses as much as digits as its factorization.

2820220628271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940073542760.

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 2820220628271 in words is "two trillion, eight hundred twenty billion, two hundred twenty million, six hundred twenty-eight thousand, two hundred seventy-one".