110021022121 has 4 divisors (see below), whose sum is σ = 113814850500. Its totient is φ = 106227193744.

The previous prime is 110021022107. The next prime is 110021022173. The reversal of 110021022121 is 121220120011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121220120011 = 1249 ⋅97053739.

It can be written as a sum of positive squares in 2 ways, for example, as 65525760400 + 44495261721 = 255980^2 + 210939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110021022121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110021052121) 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, 1896914146 + ... + 1896914203.

It is an arithmetic number, because the mean of its divisors is an integer number (28453712625).

Almost surely, 2^110021022121 is an apocalyptic number.

It is an amenable number.

110021022121 is a deficient number, since it is larger than the sum of its proper divisors (3793828379).

110021022121 is an equidigital number, since it uses as much as digits as its factorization.

110021022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793828378.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 110021022121 its reverse (121220120011), we get a palindrome (231241142132).

The spelling of 110021022121 in words is "one hundred ten billion, twenty-one million, twenty-two thousand, one hundred twenty-one".