21202101112012 has 12 divisors (see below), whose sum is σ = 37966553154376. Its totient is φ = 10354514496480.

The previous prime is 21202101112007. The next prime is 21202101112021. The reversal of 21202101112012 is 21021110120212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61634014689 + ... + 61634015032.

Almost surely, 2^{21202101112012} is an apocalyptic number.

It is an amenable number.

21202101112012 is a deficient number, since it is larger than the sum of its proper divisors (16764452042364).

21202101112012 is a wasteful number, since it uses less digits than its factorization.

21202101112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123268029768 (or 123268029766 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21202101112012 its reverse (21021110120212), we get a palindrome (42223211232224).

The spelling of 21202101112012 in words is "twenty-one trillion, two hundred two billion, one hundred one million, one hundred twelve thousand, twelve".