10020221971 has 2 divisors, whose sum is σ = 10020221972. Its totient is φ = 10020221970.

The previous prime is 10020221963. The next prime is 10020222001. The reversal of 10020221971 is 17912202001.

It is a weak prime.

It is an emirp because it is prime and its reverse (17912202001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10020221971 - 2³ = 10020221963 is a prime.

It is a super-2 number, since 2×10020221971² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10020228971) 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, 5010110985 + 5010110986.

It is an arithmetic number, because the mean of its divisors is an integer number (5010110986).

Almost surely, 2^10020221971 is an apocalyptic number.

10020221971 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020221971 is an equidigital number, since it uses as much as digits as its factorization.

10020221971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 10020221971 its reverse (17912202001), we get a palindrome (27932423972).

The spelling of 10020221971 in words is "ten billion, twenty million, two hundred twenty-one thousand, nine hundred seventy-one".