1222042512000 has 256 divisors, whose sum is σ = 4160565377280. Its totient is φ = 317070028800.

The previous prime is 1222042511971. The next prime is 1222042512001. The reversal of 1222042512000 is 2152402221.

It is a super-2 number, since 2×1222042512000² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222042512001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1431957 + ... + 2120043.

It is an arithmetic number, because the mean of its divisors is an integer number (16252208505).

Almost surely, 2^{1222042512000} is an apocalyptic number.

1222042512000 is a gapful number since it is divisible by the number (10) 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 1222042512000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080282688640).

1222042512000 is an abundant number, since it is smaller than the sum of its proper divisors (2938522865280).

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

1222042512000 is an equidigital number, since it uses as much as digits as its factorization.

1222042512000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688156 (or 688134 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 1222042512000 its reverse (2152402221), we get a palindrome (1224194914221).

The spelling of 1222042512000 in words is "one trillion, two hundred twenty-two billion, forty-two million, five hundred twelve thousand".