22112012221222 has 64 divisors (see below), whose sum is σ = 42323783698944. Its totient is φ = 8412776951040.

The previous prime is 22112012221217. The next prime is 22112012221253. The reversal of 22112012221222 is 22212221021122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22112012221193 and 22112012221202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28468858 + ... + 29235250.

It is an arithmetic number, because the mean of its divisors is an integer number (661309120296).

Almost surely, 2^{22112012221222} is an apocalyptic number.

22112012221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22112012221222 is a deficient number, since it is larger than the sum of its proper divisors (20211771477722).

22112012221222 is a wasteful number, since it uses less digits than its factorization.

22112012221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770813.

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

Adding to 22112012221222 its reverse (22212221021122), we get a palindrome (44324233242344).

The spelling of 22112012221222 in words is "twenty-two trillion, one hundred twelve billion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".