21111119284 has 12 divisors (see below), whose sum is σ = 37210247200. Its totient is φ = 10479620088.

The previous prime is 21111119209. The next prime is 21111119321. The reversal of 21111119284 is 48291111112.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18984264 + ... + 18985375.

Almost surely, 2^21111119284 is an apocalyptic number.

It is an amenable number.

21111119284 is a deficient number, since it is larger than the sum of its proper divisors (16099127916).

21111119284 is a wasteful number, since it uses less digits than its factorization.

21111119284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37969782 (or 37969780 counting only the distinct ones).

The product of its digits is 1152, while the sum is 31.

The spelling of 21111119284 in words is "twenty-one billion, one hundred eleven million, one hundred nineteen thousand, two hundred eighty-four".