200110100210021 has 2 divisors, whose sum is σ = 200110100210022. Its totient is φ = 200110100210020.

The previous prime is 200110100209997. The next prime is 200110100210023. The reversal of 200110100210021 is 120012001011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133278020052100 + 66832080157921 = 11544610^2 + 8175089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200110100210021 is a prime.

Together with 200110100210023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 200110100209984 and 200110100210011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200110100210023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055050105010 + 100055050105011.

It is an arithmetic number, because the mean of its divisors is an integer number (100055050105011).

Almost surely, 2^{200110100210021} is an apocalyptic number.

It is an amenable number.

200110100210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200110100210021 is an equidigital number, since it uses as much as digits as its factorization.

200110100210021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 200110100210021 its reverse (120012001011002), we get a palindrome (320122101221023).

The spelling of 200110100210021 in words is "two hundred trillion, one hundred ten billion, one hundred million, two hundred ten thousand, twenty-one".