20202071 has 2 divisors, whose sum is σ = 20202072. Its totient is φ = 20202070.

The previous prime is 20202031. The next prime is 20202097. The reversal of 20202071 is 17020202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20202071 - 2²² = 16007767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20202011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101035 + 10101036.

It is an arithmetic number, because the mean of its divisors is an integer number (10101036).

Almost surely, 2^20202071 is an apocalyptic number.

20202071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202071 is an equidigital number, since it uses as much as digits as its factorization.

20202071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20202071 is about 4494.6714006699. The cubic root of 20202071 is about 272.3528751578.

Adding to 20202071 its reverse (17020202), we get a palindrome (37222273).

The spelling of 20202071 in words is "twenty million, two hundred two thousand, seventy-one".