21201110002102 has 8 divisors (see below), whose sum is σ = 31806795150000. Its totient is φ = 10598844952104.

The previous prime is 21201110002067. The next prime is 21201110002129. The reversal of 21201110002102 is 20120001110212.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855008977 + ... + 855033772.

It is an arithmetic number, because the mean of its divisors is an integer number (3975849393750).

Almost surely, 2^{21201110002102} is an apocalyptic number.

21201110002102 is a deficient number, since it is larger than the sum of its proper divisors (10605685147898).

21201110002102 is a wasteful number, since it uses less digits than its factorization.

21201110002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710048950.

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

Adding to 21201110002102 its reverse (20120001110212), we get a palindrome (41321111112314).

The spelling of 21201110002102 in words is "twenty-one trillion, two hundred one billion, one hundred ten million, two thousand, one hundred two".