12221123023221 has 8 divisors (see below), whose sum is σ = 18622663654464. Its totient is φ = 6983498870400.

The previous prime is 12221123023127. The next prime is 12221123023223. The reversal of 12221123023221 is 12232032112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12221123023221 - 2²² = 12221118828917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221123023191 and 12221123023200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221123023223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290979119580 + ... + 290979119621.

It is an arithmetic number, because the mean of its divisors is an integer number (2327832956808).

Almost surely, 2^{12221123023221} is an apocalyptic number.

It is an amenable number.

12221123023221 is a deficient number, since it is larger than the sum of its proper divisors (6401540631243).

12221123023221 is an equidigital number, since it uses as much as digits as its factorization.

12221123023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581958239211.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12221123023221 its reverse (12232032112221), we get a palindrome (24453155135442).

The spelling of 12221123023221 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-three million, twenty-three thousand, two hundred twenty-one".