21110113310 has 32 divisors (see below), whose sum is σ = 44641249632. Its totient is φ = 7085911680.

The previous prime is 21110113303. The next prime is 21110113319. The reversal of 21110113310 is 1331101112.

It is a happy number.

It is a super-3 number, since 3×21110113310³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110113319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7379729 + ... + 7382588.

It is an arithmetic number, because the mean of its divisors is an integer number (1395039051).

Almost surely, 2^21110113310 is an apocalyptic number.

21110113310 is an abundant number, since it is smaller than the sum of its proper divisors (23531136322).

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

21110113310 is a wasteful number, since it uses less digits than its factorization.

21110113310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14762348.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 21110113310 its reverse (1331101112), we get a palindrome (22441214422).

The spelling of 21110113310 in words is "twenty-one billion, one hundred ten million, one hundred thirteen thousand, three hundred ten".