20228701 has 2 divisors, whose sum is σ = 20228702. Its totient is φ = 20228700.

The previous prime is 20228699. The next prime is 20228713. The reversal of 20228701 is 10782202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16208676 + 4020025 = 4026^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 20228701 - 2¹ = 20228699 is a prime.

Together with 20228699, 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 (20228101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10114350 + 10114351.

It is an arithmetic number, because the mean of its divisors is an integer number (10114351).

Almost surely, 2^20228701 is an apocalyptic number.

It is an amenable number.

20228701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20228701 is an equidigital number, since it uses as much as digits as its factorization.

20228701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20228701 is about 4497.6328218297. The cubic root of 20228701 is about 272.4724928046.

The spelling of 20228701 in words is "twenty million, two hundred twenty-eight thousand, seven hundred one".