110121221101 has 4 divisors (see below), whose sum is σ = 110265927804. Its totient is φ = 109976514400.

The previous prime is 110121221057. The next prime is 110121221129. The reversal of 110121221101 is 101122121011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101122121011 = 23 ⋅4396613957.

It can be written as a sum of positive squares in 2 ways, for example, as 17141355625 + 92979865476 = 130925^2 + 304926^2 .

It is a cyclic number.

It is not a de Polignac number, because 110121221101 - 2¹⁷ = 110121090029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121221131) 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, 72352210 + ... + 72353731.

It is an arithmetic number, because the mean of its divisors is an integer number (27566481951).

Almost surely, 2^110121221101 is an apocalyptic number.

It is an amenable number.

110121221101 is a deficient number, since it is larger than the sum of its proper divisors (144706703).

110121221101 is an equidigital number, since it uses as much as digits as its factorization.

110121221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144706702.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110121221101 its reverse (101122121011), we get a palindrome (211243342112).

The spelling of 110121221101 in words is "one hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred one".