21202102112041 has 2 divisors, whose sum is σ = 21202102112042. Its totient is φ = 21202102112040.

The previous prime is 21202102111979. The next prime is 21202102112083. The reversal of 21202102112041 is 14021120120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16260217500816 + 4941884611225 = 4032396^2 + 2223035^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202102112041 - 2¹⁵ = 21202102079273 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202102112641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601051056020 + 10601051056021.

It is an arithmetic number, because the mean of its divisors is an integer number (10601051056021).

Almost surely, 2^{21202102112041} is an apocalyptic number.

It is an amenable number.

21202102112041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202102112041 is an equidigital number, since it uses as much as digits as its factorization.

21202102112041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21202102112041 its reverse (14021120120212), we get a palindrome (35223222232253).

The spelling of 21202102112041 in words is "twenty-one trillion, two hundred two billion, one hundred two million, one hundred twelve thousand, forty-one".