21050200601 has 2 divisors, whose sum is σ = 21050200602. Its totient is φ = 21050200600.

The previous prime is 21050200583. The next prime is 21050200603. The reversal of 21050200601 is 10600205012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16409866201 + 4640334400 = 128101^2 + 68120^2 .

It is a cyclic number.

It is not a de Polignac number, because 21050200601 - 2¹⁴ = 21050184217 is a prime.

It is a super-2 number, since 2×21050200601² (a number of 21 digits) contains 22 as substring.

Together with 21050200603, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21050200601.

It is not a weakly prime, because it can be changed into another prime (21050200603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10525100300 + 10525100301.

It is an arithmetic number, because the mean of its divisors is an integer number (10525100301).

Almost surely, 2^21050200601 is an apocalyptic number.

It is an amenable number.

21050200601 is a deficient number, since it is larger than the sum of its proper divisors (1).

21050200601 is an equidigital number, since it uses as much as digits as its factorization.

21050200601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 21050200601 its reverse (10600205012), we get a palindrome (31650405613).

The spelling of 21050200601 in words is "twenty-one billion, fifty million, two hundred thousand, six hundred one".