21200110012012 has 12 divisors (see below), whose sum is σ = 37100650872376. Its totient is φ = 10599924048480.

The previous prime is 21200110011959. The next prime is 21200110012069. The reversal of 21200110012012 is 21021001100212.

It is a super-2 number, since 2×21200110012012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200110011983 and 21200110012001.

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, 32374689 + ... + 33023032.

Almost surely, 2^{21200110012012} is an apocalyptic number.

It is an amenable number.

21200110012012 is a deficient number, since it is larger than the sum of its proper divisors (15900540860364).

21200110012012 is a wasteful number, since it uses less digits than its factorization.

21200110012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65478768 (or 65478766 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21200110012012 its reverse (21021001100212), we get a palindrome (42221111112224).

The spelling of 21200110012012 in words is "twenty-one trillion, two hundred billion, one hundred ten million, twelve thousand, twelve".