21200111102102 has 8 divisors (see below), whose sum is σ = 31800332381016. Its totient is φ = 10600000308432.

The previous prime is 21200111102077. The next prime is 21200111102153. The reversal of 21200111102102 is 20120111100212.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 27139928 + ... + 27910139.

It is an arithmetic number, because the mean of its divisors is an integer number (3975041547627).

Almost surely, 2^{21200111102102} is an apocalyptic number.

21200111102102 is a deficient number, since it is larger than the sum of its proper divisors (10600221278914).

21200111102102 is a wasteful number, since it uses less digits than its factorization.

21200111102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55242622.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21200111102102 its reverse (20120111100212), we get a palindrome (41320222202314).

The spelling of 21200111102102 in words is "twenty-one trillion, two hundred billion, one hundred eleven million, one hundred two thousand, one hundred two".