21000112102102 has 8 divisors (see below), whose sum is σ = 36000192175056. Its totient is φ = 9000048043752.

The previous prime is 21000112101979. The next prime is 21000112102157. The reversal of 21000112102102 is 20120121100012.

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 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, 750004003633 + ... + 750004003660.

It is an arithmetic number, because the mean of its divisors is an integer number (4500024021882).

Almost surely, 2^{21000112102102} is an apocalyptic number.

21000112102102 is a deficient number, since it is larger than the sum of its proper divisors (15000080072954).

21000112102102 is a wasteful number, since it uses less digits than its factorization.

21000112102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500008007302.

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

Adding to 21000112102102 its reverse (20120121100012), we get a palindrome (41120233202114).

The spelling of 21000112102102 in words is "twenty-one trillion, one hundred twelve million, one hundred two thousand, one hundred two".