1220321130000 has 800 divisors, whose sum is σ = 4637801828352. Its totient is φ = 270604800000.

The previous prime is 1220321129999. The next prime is 1220321130037. The reversal of 1220321130000 is 311230221.

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 159 ways as a sum of consecutive naturals, for example, 2333309739 + ... + 2333310261.

Almost surely, 2^{1220321130000} is an apocalyptic number.

1220321130000 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 1220321130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2318900914176).

1220321130000 is an abundant number, since it is smaller than the sum of its proper divisors (3417480698352).

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

1220321130000 is a wasteful number, since it uses less digits than its factorization.

1220321130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1220321130000 its reverse (311230221), we get a palindrome (1220632360221).

The spelling of 1220321130000 in words is "one trillion, two hundred twenty billion, three hundred twenty-one million, one hundred thirty thousand".