2021368147 has 4 divisors (see below), whose sum is σ = 2022261280. Its totient is φ = 2020475016.

The previous prime is 2021368081. The next prime is 2021368189. The reversal of 2021368147 is 7418631202.

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 2021368147 - 2²³ = 2012979539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021368847) 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, 443163 + ... + 447700.

It is an arithmetic number, because the mean of its divisors is an integer number (505565320).

Almost surely, 2^2021368147 is an apocalyptic number.

2021368147 is a deficient number, since it is larger than the sum of its proper divisors (893133).

2021368147 is an equidigital number, since it uses as much as digits as its factorization.

2021368147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893132.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2021368147 is about 44959.6279677668. The cubic root of 2021368147 is about 1264.3921938569.

Adding to 2021368147 its reverse (7418631202), we get a palindrome (9439999349).

The spelling of 2021368147 in words is "two billion, twenty-one million, three hundred sixty-eight thousand, one hundred forty-seven".