21110000012 has 12 divisors (see below), whose sum is σ = 37043163360. Its totient is φ = 10526239056.

The previous prime is 21110000003. The next prime is 21110000057. The reversal of 21110000012 is 21000001112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7188587 + ... + 7191522.

It is an arithmetic number, because the mean of its divisors is an integer number (3086930280).

Almost surely, 2^21110000012 is an apocalyptic number.

It is an amenable number.

21110000012 is a deficient number, since it is larger than the sum of its proper divisors (15933163348).

21110000012 is a wasteful number, since it uses less digits than its factorization.

21110000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14380480 (or 14380478 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21110000012 its reverse (21000001112), we get a palindrome (42110001124).

The spelling of 21110000012 in words is "twenty-one billion, one hundred ten million, twelve", and thus it is an aban number.