21442422424411 has 2 divisors, whose sum is σ = 21442422424412. Its totient is φ = 21442422424410.

The previous prime is 21442422424373. The next prime is 21442422424429. The reversal of 21442422424411 is 11442422424412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21442422424411 - 2²³ = 21442414035803 is a prime.

It is not a weakly prime, because it can be changed into another prime (21442422424471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721211212205 + 10721211212206.

It is an arithmetic number, because the mean of its divisors is an integer number (10721211212206).

Almost surely, 2^{21442422424411} is an apocalyptic number.

21442422424411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442422424411 is an equidigital number, since it uses as much as digits as its factorization.

21442422424411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131072, while the sum is 37.

Adding to 21442422424411 its reverse (11442422424412), we get a palindrome (32884844848823).

Subtracting from 21442422424411 its reverse (11442422424412), we obtain a palindrome (9999999999999).

The spelling of 21442422424411 in words is "twenty-one trillion, four hundred forty-two billion, four hundred twenty-two million, four hundred twenty-four thousand, four hundred eleven".