4253371021 has 2 divisors, whose sum is σ = 4253371022. Its totient is φ = 4253371020.

The previous prime is 4253371019. The next prime is 4253371039. The reversal of 4253371021 is 1201733524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3870581796 + 382789225 = 62214^2 + 19565^2 .

It is a cyclic number.

It is not a de Polignac number, because 4253371021 - 2¹ = 4253371019 is a prime.

Together with 4253371019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4253371081) 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 as a sum of consecutive naturals, namely, 2126685510 + 2126685511.

It is an arithmetic number, because the mean of its divisors is an integer number (2126685511).

Almost surely, 2^4253371021 is an apocalyptic number.

It is an amenable number.

4253371021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4253371021 is an equidigital number, since it uses as much as digits as its factorization.

4253371021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 4253371021 is about 65217.8734780581. The cubic root of 4253371021 is about 1620.2340541012.

The spelling of 4253371021 in words is "four billion, two hundred fifty-three million, three hundred seventy-one thousand, twenty-one".