21200201201 has 2 divisors, whose sum is σ = 21200201202. Its totient is φ = 21200201200.

The previous prime is 21200201189. The next prime is 21200201221. The reversal of 21200201201 is 10210200212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21158611600 + 41589601 = 145460^2 + 6449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200201201 is a prime.

It is not a weakly prime, because it can be changed into another prime (21200201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600100600 + 10600100601.

It is an arithmetic number, because the mean of its divisors is an integer number (10600100601).

Almost surely, 2^21200201201 is an apocalyptic number.

It is an amenable number.

21200201201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200201201 is an equidigital number, since it uses as much as digits as its factorization.

21200201201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21200201201 its reverse (10210200212), we get a palindrome (31410401413).

The spelling of 21200201201 in words is "twenty-one billion, two hundred million, two hundred one thousand, two hundred one".