12110222021 has 4 divisors (see below), whose sum is σ = 12111235212. Its totient is φ = 12109208832.

The previous prime is 12110222011. The next prime is 12110222023. The reversal of 12110222021 is 12022201121.

12110222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12022201121 = 7 ⋅1717457303.

It can be written as a sum of positive squares in 2 ways, for example, as 2027250625 + 10082971396 = 45025^2 + 100414^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110222021 - 2¹⁴ = 12110205637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110221987 and 12110222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110222023) 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 3 ways as a sum of consecutive naturals, for example, 488450 + ... + 512643.

It is an arithmetic number, because the mean of its divisors is an integer number (3027808803).

Almost surely, 2^12110222021 is an apocalyptic number.

It is an amenable number.

12110222021 is a deficient number, since it is larger than the sum of its proper divisors (1013191).

12110222021 is a wasteful number, since it uses less digits than its factorization.

12110222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013190.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12110222021 its reverse (12022201121), we get a palindrome (24132423142).

The spelling of 12110222021 in words is "twelve billion, one hundred ten million, two hundred twenty-two thousand, twenty-one".