21102242343011 has 2 divisors, whose sum is σ = 21102242343012. Its totient is φ = 21102242343010.

The previous prime is 21102242342999. The next prime is 21102242343019. The reversal of 21102242343011 is 11034324220112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21102242343011 - 2³⁰ = 21101168601187 is a prime.

It is a super-2 number, since 2×21102242343011² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21102242343019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551121171505 + 10551121171506.

It is an arithmetic number, because the mean of its divisors is an integer number (10551121171506).

Almost surely, 2^{21102242343011} is an apocalyptic number.

21102242343011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102242343011 is an equidigital number, since it uses as much as digits as its factorization.

21102242343011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21102242343011 its reverse (11034324220112), we get a palindrome (32136566563123).

The spelling of 21102242343011 in words is "twenty-one trillion, one hundred two billion, two hundred forty-two million, three hundred forty-three thousand, eleven".