21144130011 has 12 divisors (see below), whose sum is σ = 30545460088. Its totient is φ = 14094268704.

The previous prime is 21144129991. The next prime is 21144130061. The reversal of 21144130011 is 11003144112.

21144130011 is a `hidden beast` number, since 211 + 441 + 3 + 0 + 0 + 11 = 666.

It is not a de Polignac number, because 21144130011 - 2⁶ = 21144129947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21144130061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75850 + ... + 219183.

Almost surely, 2^21144130011 is an apocalyptic number.

21144130011 is a deficient number, since it is larger than the sum of its proper divisors (9401330077).

21144130011 is a wasteful number, since it uses less digits than its factorization.

21144130011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303002 (or 302999 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21144130011 its reverse (11003144112), we get a palindrome (32147274123).

The spelling of 21144130011 in words is "twenty-one billion, one hundred forty-four million, one hundred thirty thousand, eleven".