21000114028 has 24 divisors (see below), whose sum is σ = 38355190272. Its totient is φ = 10041658704.

The previous prime is 21000114017. The next prime is 21000114061. The reversal of 21000114028 is 82041100012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21000113996 and 21000114014.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 560251 + ... + 596557.

It is an arithmetic number, because the mean of its divisors is an integer number (1598132928).

Almost surely, 2^21000114028 is an apocalyptic number.

It is an amenable number.

21000114028 is a deficient number, since it is larger than the sum of its proper divisors (17355076244).

21000114028 is a wasteful number, since it uses less digits than its factorization.

21000114028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42621 (or 42619 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 21000114028 in words is "twenty-one billion, one hundred fourteen thousand, twenty-eight".