21210220010041 has 2 divisors, whose sum is σ = 21210220010042. Its totient is φ = 21210220010040.

The previous prime is 21210220009999. The next prime is 21210220010053. The reversal of 21210220010041 is 14001002201212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19680535875625 + 1529684134416 = 4436275^2 + 1236804^2 .

It is a cyclic number.

It is not a de Polignac number, because 21210220010041 - 2¹¹ = 21210220007993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21210220009997 and 21210220010024.

It is not a weakly prime, because it can be changed into another prime (21210220010341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605110005020 + 10605110005021.

It is an arithmetic number, because the mean of its divisors is an integer number (10605110005021).

Almost surely, 2^{21210220010041} is an apocalyptic number.

It is an amenable number.

21210220010041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210220010041 is an equidigital number, since it uses as much as digits as its factorization.

21210220010041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21210220010041 its reverse (14001002201212), we get a palindrome (35211222211253).

The spelling of 21210220010041 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty million, ten thousand, forty-one".