21110210020110 has 16 divisors (see below), whose sum is σ = 50664504048336. Its totient is φ = 5629389338688.

The previous prime is 21110210020033. The next prime is 21110210020127. The reversal of 21110210020110 is 1102001201112.

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, 351836833639 + ... + 351836833698.

It is an arithmetic number, because the mean of its divisors is an integer number (3166531503021).

Almost surely, 2^{21110210020110} is an apocalyptic number.

21110210020110 is an abundant number, since it is smaller than the sum of its proper divisors (29554294028226).

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

21110210020110 is a wasteful number, since it uses less digits than its factorization.

21110210020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703673667347.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21110210020110 its reverse (1102001201112), we get a palindrome (22212211221222).

The spelling of 21110210020110 in words is "twenty-one trillion, one hundred ten billion, two hundred ten million, twenty thousand, one hundred ten".