110121200012221 has 4 divisors (see below), whose sum is σ = 110170781824444. Its totient is φ = 110071618200000.

The previous prime is 110121200012167. The next prime is 110121200012279. The reversal of 110121200012221 is 122210002121011.

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 88209570080025 + 21911629932196 = 9391995^2 + 4680986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110121200012221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110121200012195 and 110121200012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121200012521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24790902780 + ... + 24790907221.

It is an arithmetic number, because the mean of its divisors is an integer number (27542695456111).

Almost surely, 2^{110121200012221} is an apocalyptic number.

It is an amenable number.

110121200012221 is a deficient number, since it is larger than the sum of its proper divisors (49581812223).

110121200012221 is an equidigital number, since it uses as much as digits as its factorization.

110121200012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49581812222.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 110121200012221 its reverse (122210002121011), we get a palindrome (232331202133232).

The spelling of 110121200012221 in words is "one hundred ten trillion, one hundred twenty-one billion, two hundred million, twelve thousand, two hundred twenty-one".