110200211121221 has 4 divisors (see below), whose sum is σ = 118677150438252. Its totient is φ = 101723271804192.

The previous prime is 110200211121163. The next prime is 110200211121263. The reversal of 110200211121221 is 122121112002011.

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 4309834128196 + 105890376993025 = 2076014^2 + 10290305^2 .

It is a cyclic number.

It is not a de Polignac number, because 110200211121221 - 2²² = 110200206926917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 110200211121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110200211141221) 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, 4238469658496 + ... + 4238469658521.

It is an arithmetic number, because the mean of its divisors is an integer number (29669287609563).

Almost surely, 2^{110200211121221} is an apocalyptic number.

It is an amenable number.

110200211121221 is a deficient number, since it is larger than the sum of its proper divisors (8476939317031).

110200211121221 is an equidigital number, since it uses as much as digits as its factorization.

110200211121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476939317030.

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

Adding to 110200211121221 its reverse (122121112002011), we get a palindrome (232321323123232).

The spelling of 110200211121221 in words is "one hundred ten trillion, two hundred billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-one".