2021853017 has 2 divisors, whose sum is σ = 2021853018. Its totient is φ = 2021853016.

The previous prime is 2021853011. The next prime is 2021853091. The reversal of 2021853017 is 7103581202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1165471321 + 856381696 = 34139^2 + 29264^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021853017 - 2⁸ = 2021852761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021853011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010926508 + 1010926509.

It is an arithmetic number, because the mean of its divisors is an integer number (1010926509).

Almost surely, 2^2021853017 is an apocalyptic number.

It is an amenable number.

2021853017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021853017 is an equidigital number, since it uses as much as digits as its factorization.

2021853017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2021853017 is about 44965.0199266052. The cubic root of 2021853017 is about 1264.4932832818.

The spelling of 2021853017 in words is "two billion, twenty-one million, eight hundred fifty-three thousand, seventeen".