20023220071 has 2 divisors, whose sum is σ = 20023220072. Its totient is φ = 20023220070.

The previous prime is 20023220011. The next prime is 20023220117. The reversal of 20023220071 is 17002232002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20023220071 - 2¹⁹ = 20022695783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20023220011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011610035 + 10011610036.

It is an arithmetic number, because the mean of its divisors is an integer number (10011610036).

Almost surely, 2^20023220071 is an apocalyptic number.

20023220071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023220071 is an equidigital number, since it uses as much as digits as its factorization.

20023220071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

Adding to 20023220071 its reverse (17002232002), we get a palindrome (37025452073).

The spelling of 20023220071 in words is "twenty billion, twenty-three million, two hundred twenty thousand, seventy-one".