21442524011 has 2 divisors, whose sum is σ = 21442524012. Its totient is φ = 21442524010.

The previous prime is 21442523987. The next prime is 21442524079. The reversal of 21442524011 is 11042524412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21442524011 - 2²⁶ = 21375415147 is a prime.

It is not a weakly prime, because it can be changed into another prime (21442524211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721262005 + 10721262006.

It is an arithmetic number, because the mean of its divisors is an integer number (10721262006).

Almost surely, 2^21442524011 is an apocalyptic number.

21442524011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442524011 is an equidigital number, since it uses as much as digits as its factorization.

21442524011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

The spelling of 21442524011 in words is "twenty-one billion, four hundred forty-two million, five hundred twenty-four thousand, eleven".