110121221021 has 32 divisors (see below), whose sum is σ = 129018244608. Its totient is φ = 92050283520.

The previous prime is 110121220991. The next prime is 110121221027. The reversal of 110121221021 is 120122121011.

It is a cyclic number.

It is not a de Polignac number, because 110121221021 - 2¹⁰ = 110121219997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110121220987 and 110121221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121221027) 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 31 ways as a sum of consecutive naturals, for example, 18408851 + ... + 18414831.

It is an arithmetic number, because the mean of its divisors is an integer number (4031820144).

Almost surely, 2^110121221021 is an apocalyptic number.

It is an amenable number.

110121221021 is a deficient number, since it is larger than the sum of its proper divisors (18897023587).

110121221021 is a wasteful number, since it uses less digits than its factorization.

110121221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 110121221021 its reverse (120122121011), we get a palindrome (230243342032).

The spelling of 110121221021 in words is "one hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-one".