12022112211221 has 16 divisors (see below), whose sum is σ = 14512052150400. Its totient is φ = 9728998164288.

The previous prime is 12022112211133. The next prime is 12022112211227. The reversal of 12022112211221 is 12211221122021.

It is a cyclic number.

It is not a de Polignac number, because 12022112211221 - 2²⁶ = 12022045102357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12022112211193 and 12022112211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022112211227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154213286 + ... + 154291223.

It is an arithmetic number, because the mean of its divisors is an integer number (907003259400).

Almost surely, 2^{12022112211221} is an apocalyptic number.

It is an amenable number.

12022112211221 is a deficient number, since it is larger than the sum of its proper divisors (2489939939179).

12022112211221 is a wasteful number, since it uses less digits than its factorization.

12022112211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308504828.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12022112211221 its reverse (12211221122021), we get a palindrome (24233333333242).

The spelling of 12022112211221 in words is "twelve trillion, twenty-two billion, one hundred twelve million, two hundred eleven thousand, two hundred twenty-one".