21110002102 has 16 divisors (see below), whose sum is σ = 36329392800. Its totient is φ = 9011939328.

The previous prime is 21110002063. The next prime is 21110002157. The reversal of 21110002102 is 20120001112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2929977 + ... + 2937172.

It is an arithmetic number, because the mean of its divisors is an integer number (2270587050).

Almost surely, 2^21110002102 is an apocalyptic number.

21110002102 is a deficient number, since it is larger than the sum of its proper divisors (15219390698).

21110002102 is a wasteful number, since it uses less digits than its factorization.

21110002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867415.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21110002102 its reverse (20120001112), we get a palindrome (41230003214).

The spelling of 21110002102 in words is "twenty-one billion, one hundred ten million, two thousand, one hundred two".