21031213200112 has 20 divisors (see below), whose sum is σ = 40876518094776. Its totient is φ = 10482434336960.

The previous prime is 21031213200089. The next prime is 21031213200187. The reversal of 21031213200112 is 21100231213012.

It is a self number, because there is not a number n which added to its sum of digits gives 21031213200112.

It is a congruent number.

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, 2073261214 + ... + 2073271357.

Almost surely, 2^{21031213200112} is an apocalyptic number.

It is an amenable number.

21031213200112 is a deficient number, since it is larger than the sum of its proper divisors (19845304894664).

21031213200112 is a wasteful number, since it uses less digits than its factorization.

21031213200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146532896 (or 4146532890 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21031213200112 its reverse (21100231213012), we get a palindrome (42131444413124).

The spelling of 21031213200112 in words is "twenty-one trillion, thirty-one billion, two hundred thirteen million, two hundred thousand, one hundred twelve".