1220443203112 has 16 divisors (see below), whose sum is σ = 2615235435360. Its totient is φ = 523047087024.

The previous prime is 1220443203079. The next prime is 1220443203157. The reversal of 1220443203112 is 2113023440221.

It is a super-2 number, since 2×1220443203112² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10896814258 + ... + 10896814369.

It is an arithmetic number, because the mean of its divisors is an integer number (163452214710).

Almost surely, 2^{1220443203112} is an apocalyptic number.

It is an amenable number.

1220443203112 is an abundant number, since it is smaller than the sum of its proper divisors (1394792232248).

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

1220443203112 is a wasteful number, since it uses less digits than its factorization.

1220443203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21793628640 (or 21793628636 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1220443203112 its reverse (2113023440221), we get a palindrome (3333466643333).

The spelling of 1220443203112 in words is "one trillion, two hundred twenty billion, four hundred forty-three million, two hundred three thousand, one hundred twelve".