21110111102110 has 16 divisors (see below), whose sum is σ = 39308482742400. Its totient is φ = 8152870494496.

The previous prime is 21110111102107. The next prime is 21110111102153. The reversal of 21110111102110 is 1120111101112.

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, 36396742990 + ... + 36396743569.

It is an arithmetic number, because the mean of its divisors is an integer number (2456780171400).

Almost surely, 2^{21110111102110} is an apocalyptic number.

21110111102110 is a deficient number, since it is larger than the sum of its proper divisors (18198371640290).

21110111102110 is a wasteful number, since it uses less digits than its factorization.

21110111102110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72793486595.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 21110111102110 its reverse (1120111101112), we get a palindrome (22230222203222).

The spelling of 21110111102110 in words is "twenty-one trillion, one hundred ten billion, one hundred eleven million, one hundred two thousand, one hundred ten".