21200110201 has 2 divisors, whose sum is σ = 21200110202. Its totient is φ = 21200110200.

The previous prime is 21200110177. The next prime is 21200110223. The reversal of 21200110201 is 10201100212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17698311225 + 3501798976 = 133035^2 + 59176^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200110201 - 2¹³ = 21200102009 is a prime.

It is not a weakly prime, because it can be changed into another prime (21200110241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600055100 + 10600055101.

It is an arithmetic number, because the mean of its divisors is an integer number (10600055101).

Almost surely, 2^21200110201 is an apocalyptic number.

It is an amenable number.

21200110201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200110201 is an equidigital number, since it uses as much as digits as its factorization.

21200110201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21200110201 its reverse (10201100212), we get a palindrome (31401210413).

The spelling of 21200110201 in words is "twenty-one billion, two hundred million, one hundred ten thousand, two hundred one".