21884050011 has 32 divisors (see below), whose sum is σ = 29946118720. Its totient is φ = 14211293184.

The previous prime is 21884049961. The next prime is 21884050021. The reversal of 21884050011 is 11005048812.

It is a happy number.

It is not a de Polignac number, because 21884050011 - 2³⁴ = 4704180827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21884050021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15060561 + ... + 15062013.

It is an arithmetic number, because the mean of its divisors is an integer number (935816210).

Almost surely, 2^21884050011 is an apocalyptic number.

21884050011 is a deficient number, since it is larger than the sum of its proper divisors (8062068709).

21884050011 is a wasteful number, since it uses less digits than its factorization.

21884050011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335.

The product of its (nonzero) digits is 2560, while the sum is 30.

Adding to 21884050011 its reverse (11005048812), we get a palindrome (32889098823).

The spelling of 21884050011 in words is "twenty-one billion, eight hundred eighty-four million, fifty thousand, eleven".