22001000012222 has 24 divisors (see below), whose sum is σ = 41456429778288. Its totient is φ = 8571818185920.

The previous prime is 22001000012191. The next prime is 22001000012227. The reversal of 22001000012222 is 22221000010022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22001000012197 and 22001000012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001000012227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6493799963 + ... + 6493803350.

It is an arithmetic number, because the mean of its divisors is an integer number (1727351240762).

Almost surely, 2^{22001000012222} is an apocalyptic number.

22001000012222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22001000012222 is a deficient number, since it is larger than the sum of its proper divisors (19455429766066).

22001000012222 is a wasteful number, since it uses less digits than its factorization.

22001000012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12987603344 (or 12987603333 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22001000012222 its reverse (22221000010022), we get a palindrome (44222000022244).

The spelling of 22001000012222 in words is "twenty-two trillion, one billion, twelve thousand, two hundred twenty-two".