110021223121 has 4 divisors (see below), whose sum is σ = 110034995812. Its totient is φ = 110007450432.

The previous prime is 110021223107. The next prime is 110021223131. The reversal of 110021223121 is 121322120011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121322120011 = 5407 ⋅22437973.

It can be written as a sum of positive squares in 2 ways, for example, as 7518797521 + 102502425600 = 86711^2 + 320160^2 .

It is a cyclic number.

It is not a de Polignac number, because 110021223121 - 2¹³ = 110021214929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110021223095 and 110021223104.

It is not an unprimeable number, because it can be changed into a prime (110021223131) 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, 6874356 + ... + 6890341.

It is an arithmetic number, because the mean of its divisors is an integer number (27508748953).

Almost surely, 2^110021223121 is an apocalyptic number.

It is an amenable number.

110021223121 is a deficient number, since it is larger than the sum of its proper divisors (13772691).

110021223121 is an equidigital number, since it uses as much as digits as its factorization.

110021223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13772690.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 110021223121 its reverse (121322120011), we get a palindrome (231343343132).

The spelling of 110021223121 in words is "one hundred ten billion, twenty-one million, two hundred twenty-three thousand, one hundred twenty-one".