21110211120102 has 32 divisors (see below), whose sum is σ = 45469276860672. Its totient is φ = 6495288170784.

The previous prime is 21110211120083. The next prime is 21110211120113. The reversal of 21110211120102 is 20102111201112.

It is a happy number.

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, 184368 + ... + 6500339.

It is an arithmetic number, because the mean of its divisors is an integer number (1420914901896).

Almost surely, 2^{21110211120102} is an apocalyptic number.

21110211120102 is an abundant number, since it is smaller than the sum of its proper divisors (24359065740570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110211120102 is a wasteful number, since it uses less digits than its factorization.

21110211120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6725212.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21110211120102 its reverse (20102111201112), we get a palindrome (41212322321214).

The spelling of 21110211120102 in words is "twenty-one trillion, one hundred ten billion, two hundred eleven million, one hundred twenty thousand, one hundred two".