10200103210021 has 2 divisors, whose sum is σ = 10200103210022. Its totient is φ = 10200103210020.

The previous prime is 10200103210019. The next prime is 10200103210039. The reversal of 10200103210021 is 12001230100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7928785956100 + 2271317253921 = 2815810^2 + 1507089^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200103210021 - 2¹ = 10200103210019 is a prime.

Together with 10200103210019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10200103209983 and 10200103210010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10200103210061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100051605010 + 5100051605011.

It is an arithmetic number, because the mean of its divisors is an integer number (5100051605011).

Almost surely, 2^{10200103210021} is an apocalyptic number.

It is an amenable number.

10200103210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200103210021 is an equidigital number, since it uses as much as digits as its factorization.

10200103210021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10200103210021 its reverse (12001230100201), we get a palindrome (22201333310222).

The spelling of 10200103210021 in words is "ten trillion, two hundred billion, one hundred three million, two hundred ten thousand, twenty-one".