110211210012221 has 4 divisors (see below), whose sum is σ = 112899288305244. Its totient is φ = 107523131719200.

The previous prime is 110211210012191. The next prime is 110211210012227. The reversal of 110211210012221 is 122210012112011.

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 4462174612996 + 105749035399225 = 2112386^2 + 10283435^2 .

It is a cyclic number.

It is not a de Polignac number, because 110211210012221 - 2¹⁸ = 110211209750077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110211210012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110211210012227) 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, 1344039146450 + ... + 1344039146531.

It is an arithmetic number, because the mean of its divisors is an integer number (28224822076311).

Almost surely, 2^{110211210012221} is an apocalyptic number.

It is an amenable number.

110211210012221 is a deficient number, since it is larger than the sum of its proper divisors (2688078293023).

110211210012221 is an equidigital number, since it uses as much as digits as its factorization.

110211210012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688078293022.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 110211210012221 its reverse (122210012112011), we get a palindrome (232421222124232).

The spelling of 110211210012221 in words is "one hundred ten trillion, two hundred eleven billion, two hundred ten million, twelve thousand, two hundred twenty-one".