110200100021 has 16 divisors (see below), whose sum is σ = 125343037440. Its totient is φ = 95965692480.

The previous prime is 110200100011. The next prime is 110200100029. The reversal of 110200100021 is 120001002011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110200100021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 110200099981 and 110200100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110200100029) 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, 1319546 + ... + 1400571.

It is an arithmetic number, because the mean of its divisors is an integer number (7833939840).

Almost surely, 2^110200100021 is an apocalyptic number.

110200100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110200100021 is a deficient number, since it is larger than the sum of its proper divisors (15142937419).

110200100021 is a wasteful number, since it uses less digits than its factorization.

110200100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720284.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 110200100021 its reverse (120001002011), we get a palindrome (230201102032).

The spelling of 110200100021 in words is "one hundred ten billion, two hundred million, one hundred thousand, twenty-one".