12022211201221 has 64 divisors (see below), whose sum is σ = 13870239989760. Its totient is φ = 10328363136000.

The previous prime is 12022211201177. The next prime is 12022211201233. The reversal of 12022211201221 is 12210211222021.

It is not a de Polignac number, because 12022211201221 - 2¹³ = 12022211193029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022211201261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4501013716 + ... + 4501016386.

It is an arithmetic number, because the mean of its divisors is an integer number (216722499840).

Almost surely, 2^{12022211201221} is an apocalyptic number.

It is an amenable number.

12022211201221 is a deficient number, since it is larger than the sum of its proper divisors (1848028788539).

12022211201221 is a wasteful number, since it uses less digits than its factorization.

12022211201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12022211201221 its reverse (12210211222021), we get a palindrome (24232422423242).

The spelling of 12022211201221 in words is "twelve trillion, twenty-two billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".