1220021303300 has 18 divisors (see below), whose sum is σ = 2647446228378. Its totient is φ = 488008521280.

The previous prime is 1220021303287. The next prime is 1220021303311. The reversal of 1220021303300 is 33031200221.

It can be written as a sum of positive squares in 3 ways, for example, as 15150655744 + 1204870647556 = 123088^2 + 1097666^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6100106417 + ... + 6100106616.

It is an arithmetic number, because the mean of its divisors is an integer number (147080346021).

Almost surely, 2^{1220021303300} is an apocalyptic number.

1220021303300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220021303300 is an abundant number, since it is smaller than the sum of its proper divisors (1427424925078).

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

1220021303300 is a wasteful number, since it uses less digits than its factorization.

1220021303300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12200213047 (or 12200213040 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1220021303300 its reverse (33031200221), we get a palindrome (1253052503521).

The spelling of 1220021303300 in words is "one trillion, two hundred twenty billion, twenty-one million, three hundred three thousand, three hundred".