10220236643021 has 2 divisors, whose sum is σ = 10220236643022. Its totient is φ = 10220236643020.

The previous prime is 10220236643009. The next prime is 10220236643027. The reversal of 10220236643021 is 12034663202201.

10220236643021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8468158200100 + 1752078442921 = 2910010^2 + 1323661^2 .

It is an emirp because it is prime and its reverse (12034663202201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10220236643021 - 2¹⁴ = 10220236626637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10220236643027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110118321510 + 5110118321511.

It is an arithmetic number, because the mean of its divisors is an integer number (5110118321511).

Almost surely, 2^{10220236643021} is an apocalyptic number.

It is an amenable number.

10220236643021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220236643021 is an equidigital number, since it uses as much as digits as its factorization.

10220236643021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 10220236643021 its reverse (12034663202201), we get a palindrome (22254899845222).

The spelling of 10220236643021 in words is "ten trillion, two hundred twenty billion, two hundred thirty-six million, six hundred forty-three thousand, twenty-one".