20102221212071 has 2 divisors, whose sum is σ = 20102221212072. Its totient is φ = 20102221212070.

The previous prime is 20102221212043. The next prime is 20102221212103. The reversal of 20102221212071 is 17021212220102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20102221212071 - 2¹⁰ = 20102221211047 is a prime.

It is a super-3 number, since 3×20102221212071³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102221212571) 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, 10051110606035 + 10051110606036.

It is an arithmetic number, because the mean of its divisors is an integer number (10051110606036).

Almost surely, 2^{20102221212071} is an apocalyptic number.

20102221212071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102221212071 is an equidigital number, since it uses as much as digits as its factorization.

20102221212071 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 23.

Adding to 20102221212071 its reverse (17021212220102), we get a palindrome (37123433432173).

The spelling of 20102221212071 in words is "twenty trillion, one hundred two billion, two hundred twenty-one million, two hundred twelve thousand, seventy-one".