21113200102102 has 4 divisors (see below), whose sum is σ = 31669800153156. Its totient is φ = 10556600051050.

The previous prime is 21113200102097. The next prime is 21113200102201. The reversal of 21113200102102 is 20120100231112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278300025524 + ... + 5278300025527.

It is an arithmetic number, because the mean of its divisors is an integer number (7917450038289).

Almost surely, 2^{21113200102102} is an apocalyptic number.

21113200102102 is a deficient number, since it is larger than the sum of its proper divisors (10556600051054).

21113200102102 is a wasteful number, since it uses less digits than its factorization.

21113200102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556600051053.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21113200102102 its reverse (20120100231112), we get a palindrome (41233300333214).

The spelling of 21113200102102 in words is "twenty-one trillion, one hundred thirteen billion, two hundred million, one hundred two thousand, one hundred two".