1221300302000 has 80 divisors (see below), whose sum is σ = 2953529316192. Its totient is φ = 488449785600.

The previous prime is 1221300301981. The next prime is 1221300302003. The reversal of 1221300302000 is 2030031221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1221300302003) 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 15 ways as a sum of consecutive naturals, for example, 15165842 + ... + 15246158.

Almost surely, 2^{1221300302000} is an apocalyptic number.

1221300302000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221300302000 is an abundant number, since it is smaller than the sum of its proper divisors (1732229014192).

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

1221300302000 is an equidigital number, since it uses as much as digits as its factorization.

1221300302000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87943 (or 87927 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 1221300302000 its reverse (2030031221), we get a palindrome (1223330333221).

The spelling of 1221300302000 in words is "one trillion, two hundred twenty-one billion, three hundred million, three hundred two thousand".