1222201021120 has 112 divisors (see below), whose sum is σ = 2939362940160. Its totient is φ = 484019142656.

The previous prime is 1222201021117. The next prime is 1222201021157. The reversal of 1222201021120 is 211201022221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1222201021094 and 1222201021103.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33574449 + ... + 33610831.

Almost surely, 2^{1222201021120} is an apocalyptic number.

1222201021120 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 1222201021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469681470080).

1222201021120 is an abundant number, since it is smaller than the sum of its proper divisors (1717161919040).

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

1222201021120 is a wasteful number, since it uses less digits than its factorization.

1222201021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37442 (or 37432 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222201021120 its reverse (211201022221), we get a palindrome (1433402043341).

The spelling of 1222201021120 in words is "one trillion, two hundred twenty-two billion, two hundred one million, twenty-one thousand, one hundred twenty".