1110121011221 has 16 divisors (see below), whose sum is σ = 1158253862400. Its totient is φ = 1063304930688.

The previous prime is 1110121011211. The next prime is 1110121011253. The reversal of 1110121011221 is 1221101210111.

It is a cyclic number.

It is not a de Polignac number, because 1110121011221 - 2²⁶ = 1110053902357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110121011196 and 1110121011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110121011211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116881 + ... + 1862166.

It is an arithmetic number, because the mean of its divisors is an integer number (72390866400).

Almost surely, 2^{1110121011221} is an apocalyptic number.

It is an amenable number.

1110121011221 is a deficient number, since it is larger than the sum of its proper divisors (48132851179).

1110121011221 is an equidigital number, since it uses as much as digits as its factorization.

1110121011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979268.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1110121011221 its reverse (1221101210111), we get a palindrome (2331222221332).

The spelling of 1110121011221 in words is "one trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, two hundred twenty-one".