1222200111222 has 40 divisors (see below), whose sum is σ = 2764228328136. Its totient is φ = 403592554368.

The previous prime is 1222200111199. The next prime is 1222200111227. The reversal of 1222200111222 is 2221110022221.

It is a happy number.

It is a super-2 number, since 2×1222200111222² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1222200111195 and 1222200111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222200111227) 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 19 ways as a sum of consecutive naturals, for example, 35237083 + ... + 35271750.

Almost surely, 2^{1222200111222} is an apocalyptic number.

1222200111222 is an abundant number, since it is smaller than the sum of its proper divisors (1542028216914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222200111222 is a wasteful number, since it uses less digits than its factorization.

1222200111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70508954 (or 70508945 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222200111222 its reverse (2221110022221), we get a palindrome (3443310133443).

The spelling of 1222200111222 in words is "one trillion, two hundred twenty-two billion, two hundred million, one hundred eleven thousand, two hundred twenty-two".