1110211121221 has 4 divisors (see below), whose sum is σ = 1110624302592. Its totient is φ = 1109797939852.

The previous prime is 1110211121213. The next prime is 1110211121267. The reversal of 1110211121221 is 1221211120111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1110211121221 - 2³ = 1110211121213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110211121195 and 1110211121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110211121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206586655 + ... + 206592028.

It is an arithmetic number, because the mean of its divisors is an integer number (277656075648).

Almost surely, 2^{1110211121221} is an apocalyptic number.

It is an amenable number.

1110211121221 is a deficient number, since it is larger than the sum of its proper divisors (413181371).

1110211121221 is an equidigital number, since it uses as much as digits as its factorization.

1110211121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413181370.

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

Adding to 1110211121221 its reverse (1221211120111), we get a palindrome (2331422241332).

The spelling of 1110211121221 in words is "one trillion, one hundred ten billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-one".