1222220112000 has 256 divisors, whose sum is σ = 4161170033280. Its totient is φ = 317116108800.

The previous prime is 1222220111993. The next prime is 1222220112011. The reversal of 1222220112000 is 2110222221.

It is a super-3 number, since 3×1222220112000³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1431907 + ... + 2120093.

Almost surely, 2^{1222220112000} is an apocalyptic number.

1222220112000 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 1222220112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080585016640).

1222220112000 is an abundant number, since it is smaller than the sum of its proper divisors (2938949921280).

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

1222220112000 is an equidigital number, since it uses as much as digits as its factorization.

1222220112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688256 (or 688234 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222220112000 its reverse (2110222221), we get a palindrome (1224330334221).

The spelling of 1222220112000 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twelve thousand".