12110212223221 has 24 divisors (see below), whose sum is σ = 14851430274240. Its totient is φ = 9826510079232.

The previous prime is 12110212223203. The next prime is 12110212223233. The reversal of 12110212223221 is 12232221201121.

It is not a de Polignac number, because 12110212223221 - 2⁷ = 12110212223093 is a prime.

It is a super-2 number, since 2×12110212223221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12110212223192 and 12110212223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110212223251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55280011 + ... + 55498648.

It is an arithmetic number, because the mean of its divisors is an integer number (618809594760).

Almost surely, 2^{12110212223221} is an apocalyptic number.

It is an amenable number.

12110212223221 is a deficient number, since it is larger than the sum of its proper divisors (2741218051019).

12110212223221 is a wasteful number, since it uses less digits than its factorization.

12110212223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110778793 (or 110778786 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12110212223221 its reverse (12232221201121), we get a palindrome (24342433424342).

The spelling of 12110212223221 in words is "twelve trillion, one hundred ten billion, two hundred twelve million, two hundred twenty-three thousand, two hundred twenty-one".