110202200020021 has 4 divisors (see below), whose sum is σ = 110206243719532. Its totient is φ = 110198156320512.

The previous prime is 110202200020019. The next prime is 110202200020117. The reversal of 110202200020021 is 120020002202011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70914689419396 + 39287510600625 = 8421086^2 + 6267975^2 .

It is a cyclic number.

It is not a de Polignac number, because 110202200020021 - 2¹ = 110202200020019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110202200019983 and 110202200020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110202200023021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021808876 + ... + 2021863381.

It is an arithmetic number, because the mean of its divisors is an integer number (27551560929883).

Almost surely, 2^{110202200020021} is an apocalyptic number.

It is an amenable number.

110202200020021 is a deficient number, since it is larger than the sum of its proper divisors (4043699511).

110202200020021 is an equidigital number, since it uses as much as digits as its factorization.

110202200020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043699510.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 110202200020021 its reverse (120020002202011), we get a palindrome (230222202222032).

The spelling of 110202200020021 in words is "one hundred ten trillion, two hundred two billion, two hundred million, twenty thousand, twenty-one".