10102020212021 has 2 divisors, whose sum is σ = 10102020212022. Its totient is φ = 10102020212020.

The previous prime is 10102020211993. The next prime is 10102020212051. The reversal of 10102020212021 is 12021202020101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8633524617796 + 1468495594225 = 2938286^2 + 1211815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10102020212021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10102020211987 and 10102020212005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10102020212051) 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, 5051010106010 + 5051010106011.

It is an arithmetic number, because the mean of its divisors is an integer number (5051010106011).

Almost surely, 2^{10102020212021} is an apocalyptic number.

It is an amenable number.

10102020212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102020212021 is an equidigital number, since it uses as much as digits as its factorization.

10102020212021 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 10102020212021 its reverse (12021202020101), we get a palindrome (22123222232122).

The spelling of 10102020212021 in words is "ten trillion, one hundred two billion, twenty million, two hundred twelve thousand, twenty-one".