21110120120102 has 32 divisors (see below), whose sum is σ = 34187663109600. Its totient is φ = 9718368219648.

The previous prime is 21110120120083. The next prime is 21110120120191. The reversal of 21110120120102 is 20102102101112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71502524 + ... + 71797152.

It is an arithmetic number, because the mean of its divisors is an integer number (1068364472175).

Almost surely, 2^{21110120120102} is an apocalyptic number.

21110120120102 is a deficient number, since it is larger than the sum of its proper divisors (13077542989498).

21110120120102 is a wasteful number, since it uses less digits than its factorization.

21110120120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301640.

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

Adding to 21110120120102 its reverse (20102102101112), we get a palindrome (41212222221214).

The spelling of 21110120120102 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty million, one hundred twenty thousand, one hundred two".