2021020147 has 2 divisors, whose sum is σ = 2021020148. Its totient is φ = 2021020146.

The previous prime is 2021020091. The next prime is 2021020171. The reversal of 2021020147 is 7410201202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021020147 - 2¹¹ = 2021018099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021020247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010510073 + 1010510074.

It is an arithmetic number, because the mean of its divisors is an integer number (1010510074).

Almost surely, 2^2021020147 is an apocalyptic number.

2021020147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021020147 is an equidigital number, since it uses as much as digits as its factorization.

2021020147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 2021020147 is about 44955.7576623951. The cubic root of 2021020147 is about 1264.3196301765.

Adding to 2021020147 its reverse (7410201202), we get a palindrome (9431221349).

The spelling of 2021020147 in words is "two billion, twenty-one million, twenty thousand, one hundred forty-seven".