20201422009 has 2 divisors, whose sum is σ = 20201422010. Its totient is φ = 20201422008.

The previous prime is 20201422001. The next prime is 20201422067. The reversal of 20201422009 is 90022410202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12888606784 + 7312815225 = 113528^2 + 85515^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201422009 - 2³ = 20201422001 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201422001) 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, 10100711004 + 10100711005.

It is an arithmetic number, because the mean of its divisors is an integer number (10100711005).

Almost surely, 2^20201422009 is an apocalyptic number.

It is an amenable number.

20201422009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201422009 is an equidigital number, since it uses as much as digits as its factorization.

20201422009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 20201422009 in words is "twenty billion, two hundred one million, four hundred twenty-two thousand, nine".