21111002000012 has 12 divisors (see below), whose sum is σ = 37803422186376. Its totient is φ = 10310024232480.

The previous prime is 21111001999891. The next prime is 21111002000029. The reversal of 21111002000012 is 21000020011112.

It is a junction number, because it is equal to n+sod(n) for n = 21111001999957 and 21111002000002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61369191689 + ... + 61369192032.

It is an arithmetic number, because the mean of its divisors is an integer number (3150285182198).

Almost surely, 2^{21111002000012} is an apocalyptic number.

It is an amenable number.

21111002000012 is a deficient number, since it is larger than the sum of its proper divisors (16692420186364).

21111002000012 is a wasteful number, since it uses less digits than its factorization.

21111002000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122738383768 (or 122738383766 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21111002000012 its reverse (21000020011112), we get a palindrome (42111022011124).

The spelling of 21111002000012 in words is "twenty-one trillion, one hundred eleven billion, two million, twelve", and thus it is an aban number.