1222845324912 has 240 divisors, whose sum is σ = 3655263905280. Its totient is φ = 380296857600.

The previous prime is 1222845324863. The next prime is 1222845324919. The reversal of 1222845324912 is 2194235482221.

1222845324912 is a `hidden beast` number, since 1 + 2 + 2 + 28 + 4 + 532 + 4 + 91 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222845324919) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145037337 + ... + 145045767.

It is an arithmetic number, because the mean of its divisors is an integer number (15230266272).

Almost surely, 2^{1222845324912} is an apocalyptic number.

1222845324912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222845324912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1827631952640).

1222845324912 is an abundant number, since it is smaller than the sum of its proper divisors (2432418580368).

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

1222845324912 is a wasteful number, since it uses less digits than its factorization.

1222845324912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972 (or 8963 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 1222845324912 in words is "one trillion, two hundred twenty-two billion, eight hundred forty-five million, three hundred twenty-four thousand, nine hundred twelve".