1222222321000 has 64 divisors (see below), whose sum is σ = 2867967648000. Its totient is φ = 487526977600.

The previous prime is 1222222320989. The next prime is 1222222321003. The reversal of 1222222321000 is 1232222221.

It is not an unprimeable number, because it can be changed into a prime (1222222321003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343260 + ... + 2061259.

It is an arithmetic number, because the mean of its divisors is an integer number (44811994500).

Almost surely, 2^{1222222321000} is an apocalyptic number.

1222222321000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222222321000 is an abundant number, since it is smaller than the sum of its proper divisors (1645745327000).

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

1222222321000 is a wasteful number, since it uses less digits than its factorization.

1222222321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404899 (or 3404885 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 1222222321000 its reverse (1232222221), we get a palindrome (1223454543221).

The spelling of 1222222321000 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, three hundred twenty-one thousand".