21122838835 has 16 divisors (see below), whose sum is σ = 28971113472. Its totient is φ = 14482908000.

The previous prime is 21122838833. The next prime is 21122838871. The reversal of 21122838835 is 53883822112.

It is not a de Polignac number, because 21122838835 - 2¹ = 21122838833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21122838791 and 21122838800.

It is not an unprimeable number, because it can be changed into a prime (21122838833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506010 + ... + 546160.

It is an arithmetic number, because the mean of its divisors is an integer number (1810694592).

Almost surely, 2^21122838835 is an apocalyptic number.

21122838835 is a deficient number, since it is larger than the sum of its proper divisors (7848274637).

21122838835 is a wasteful number, since it uses less digits than its factorization.

21122838835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55194.

The product of its digits is 184320, while the sum is 43.

The spelling of 21122838835 in words is "twenty-one billion, one hundred twenty-two million, eight hundred thirty-eight thousand, eight hundred thirty-five".