21834225106511 has 4 divisors (see below), whose sum is σ = 21834476592024. Its totient is φ = 21833973621000.

The previous prime is 21834225106501. The next prime is 21834225106559. The reversal of 21834225106511 is 11560152243812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21834225106511 - 2³⁸ = 21559347199567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21834225106501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125612480 + ... + 125786181.

It is an arithmetic number, because the mean of its divisors is an integer number (5458619148006).

Almost surely, 2^{21834225106511} is an apocalyptic number.

21834225106511 is a deficient number, since it is larger than the sum of its proper divisors (251485513).

21834225106511 is an equidigital number, since it uses as much as digits as its factorization.

21834225106511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251485512.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 21834225106511 in words is "twenty-one trillion, eight hundred thirty-four billion, two hundred twenty-five million, one hundred six thousand, five hundred eleven".