1220003133120 has 336 divisors, whose sum is σ = 4335734475072. Its totient is φ = 314697277440.

The previous prime is 1220003133113. The next prime is 1220003133121. The reversal of 1220003133120 is 213313000221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1220003133093 and 1220003133102.

It is not an unprimeable number, because it can be changed into a prime (1220003133121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10781154 + ... + 10893726.

It is an arithmetic number, because the mean of its divisors is an integer number (12903971652).

Almost surely, 2^{1220003133120} is an apocalyptic number.

1220003133120 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 1220003133120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167867237536).

1220003133120 is an abundant number, since it is smaller than the sum of its proper divisors (3115731341952).

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

1220003133120 is a wasteful number, since it uses less digits than its factorization.

1220003133120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112720 (or 112707 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1220003133120 its reverse (213313000221), we get a palindrome (1433316133341).

The spelling of 1220003133120 in words is "one trillion, two hundred twenty billion, three million, one hundred thirty-three thousand, one hundred twenty".