21050201041 has 2 divisors, whose sum is σ = 21050201042. Its totient is φ = 21050201040.

The previous prime is 21050201021. The next prime is 21050201077. The reversal of 21050201041 is 14010205012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19936310416 + 1113890625 = 141196^2 + 33375^2 .

It is a cyclic number.

It is not a de Polignac number, because 21050201041 - 2⁵ = 21050201009 is a prime.

It is a super-2 number, since 2×21050201041² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21050201021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10525100520 + 10525100521.

It is an arithmetic number, because the mean of its divisors is an integer number (10525100521).

Almost surely, 2^21050201041 is an apocalyptic number.

It is an amenable number.

21050201041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21050201041 is an equidigital number, since it uses as much as digits as its factorization.

21050201041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 21050201041 its reverse (14010205012), we get a palindrome (35060406053).

The spelling of 21050201041 in words is "twenty-one billion, fifty million, two hundred one thousand, forty-one".