10202110202021 has 2 divisors, whose sum is σ = 10202110202022. Its totient is φ = 10202110202020.

The previous prime is 10202110202003. The next prime is 10202110202093. The reversal of 10202110202021 is 12020201120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8966042092225 + 1236068109796 = 2994335^2 + 1111786^2 .

It is an emirp because it is prime and its reverse (12020201120201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10202110202021 - 2²⁶ = 10202043093157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10202110201987 and 10202110202005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202110202321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101055101010 + 5101055101011.

It is an arithmetic number, because the mean of its divisors is an integer number (5101055101011).

Almost surely, 2^{10202110202021} is an apocalyptic number.

It is an amenable number.

10202110202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202110202021 is an equidigital number, since it uses as much as digits as its factorization.

10202110202021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10202110202021 its reverse (12020201120201), we get a palindrome (22222311322222).

The spelling of 10202110202021 in words is "ten trillion, two hundred two billion, one hundred ten million, two hundred two thousand, twenty-one".