1220303224140 has 768 divisors, whose sum is σ = 4759173328896. Its totient is φ = 225441792000.

The previous prime is 1220303224067. The next prime is 1220303224171. The reversal of 1220303224140 is 414223030221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220303224140.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 224441502 + ... + 224446938.

It is an arithmetic number, because the mean of its divisors is an integer number (6196840272).

Almost surely, 2^{1220303224140} is an apocalyptic number.

1220303224140 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 1220303224140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2379586664448).

1220303224140 is an abundant number, since it is smaller than the sum of its proper divisors (3538870104756).

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

1220303224140 is a wasteful number, since it uses less digits than its factorization.

1220303224140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618 (or 5616 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1220303224140 its reverse (414223030221), we get a palindrome (1634526254361).

The spelling of 1220303224140 in words is "one trillion, two hundred twenty billion, three hundred three million, two hundred twenty-four thousand, one hundred forty".