200210101220021 has 2 divisors, whose sum is σ = 200210101220022. Its totient is φ = 200210101220020.

The previous prime is 200210101219993. The next prime is 200210101220023. The reversal of 200210101220021 is 120022101012002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168346447075921 + 31863654144100 = 12974839^2 + 5644790^2 .

It is a cyclic number.

It is not a de Polignac number, because 200210101220021 - 2¹⁰ = 200210101218997 is a prime.

Together with 200210101220023, 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 = 200210101219978 and 200210101220005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200210101220023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100105050610010 + 100105050610011.

It is an arithmetic number, because the mean of its divisors is an integer number (100105050610011).

Almost surely, 2^{200210101220021} is an apocalyptic number.

It is an amenable number.

200210101220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200210101220021 is an equidigital number, since it uses as much as digits as its factorization.

200210101220021 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 200210101220021 its reverse (120022101012002), we get a palindrome (320232202232023).

The spelling of 200210101220021 in words is "two hundred trillion, two hundred ten billion, one hundred one million, two hundred twenty thousand, twenty-one".