20112221221222 has 32 divisors (see below), whose sum is σ = 32709577068000. Its totient is φ = 9219543579648.

The previous prime is 20112221221219. The next prime is 20112221221223. The reversal of 20112221221222 is 22212212221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112221221193 and 20112221221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112221221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51014038 + ... + 51406774.

It is an arithmetic number, because the mean of its divisors is an integer number (1022174283375).

Almost surely, 2^{20112221221222} is an apocalyptic number.

20112221221222 is a deficient number, since it is larger than the sum of its proper divisors (12597355846778).

20112221221222 is a wasteful number, since it uses less digits than its factorization.

20112221221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406120.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 20112221221222 its reverse (22212212221102), we get a palindrome (42324433442324).

The spelling of 20112221221222 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".