1222021112000 has 224 divisors, whose sum is σ = 3261272973504. Its totient is φ = 450911232000.

The previous prime is 1222021111981. The next prime is 1222021112003. The reversal of 1222021112000 is 2111202221.

It is not an unprimeable number, because it can be changed into a prime (1222021112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216629180 + ... + 216634820.

It is an arithmetic number, because the mean of its divisors is an integer number (14559254346).

Almost surely, 2^{1222021112000} is an apocalyptic number.

1222021112000 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 1222021112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630636486752).

1222021112000 is an abundant number, since it is smaller than the sum of its proper divisors (2039251861504).

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

1222021112000 is a wasteful number, since it uses less digits than its factorization.

1222021112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7764 (or 7744 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222021112000 its reverse (2111202221), we get a palindrome (1224132314221).

The spelling of 1222021112000 in words is "one trillion, two hundred twenty-two billion, twenty-one million, one hundred twelve thousand".