10201110007021 has 2 divisors, whose sum is σ = 10201110007022. Its totient is φ = 10201110007020.

The previous prime is 10201110007019. The next prime is 10201110007093. The reversal of 10201110007021 is 12070001110201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5851507782121 + 4349602224900 = 2418989^2 + 2085570^2 .

It is an emirp because it is prime and its reverse (12070001110201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10201110007021 - 2¹ = 10201110007019 is a prime.

Together with 10201110007019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10201110006986 and 10201110007004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10201110001021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100555003510 + 5100555003511.

It is an arithmetic number, because the mean of its divisors is an integer number (5100555003511).

Almost surely, 2^{10201110007021} is an apocalyptic number.

It is an amenable number.

10201110007021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201110007021 is an equidigital number, since it uses as much as digits as its factorization.

10201110007021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 10201110007021 its reverse (12070001110201), we get a palindrome (22271111117222).

The spelling of 10201110007021 in words is "ten trillion, two hundred one billion, one hundred ten million, seven thousand, twenty-one".