1222111200222 has 64 divisors (see below), whose sum is σ = 2965466822400. Its totient is φ = 369990102240.

The previous prime is 1222111200217. The next prime is 1222111200239. The reversal of 1222111200222 is 2220021112221.

It is a happy number.

1222111200222 is a `hidden beast` number, since 12 + 221 + 11 + 200 + 222 = 666.

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 = 1222111200195 and 1222111200204.

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, 327328 + ... + 1597299.

It is an arithmetic number, because the mean of its divisors is an integer number (46335419100).

Almost surely, 2^{1222111200222} is an apocalyptic number.

1222111200222 is an abundant number, since it is smaller than the sum of its proper divisors (1743355622178).

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

1222111200222 is a wasteful number, since it uses less digits than its factorization.

1222111200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925718 (or 1925712 counting only the distinct ones).

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

Adding to 1222111200222 its reverse (2220021112221), we get a palindrome (3442132312443).

The spelling of 1222111200222 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, two hundred thousand, two hundred twenty-two".