1331320221300 has 72 divisors (see below), whose sum is σ = 3900712144000. Its totient is φ = 350524811520.

The previous prime is 1331320221293. The next prime is 1331320221317. The reversal of 1331320221300 is 31220231331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28063225 + ... + 28110624.

Almost surely, 2^{1331320221300} is an apocalyptic number.

1331320221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331320221300 is an abundant number, since it is smaller than the sum of its proper divisors (2569391922700).

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

1331320221300 is a wasteful number, since it uses less digits than its factorization.

1331320221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56173945 (or 56173938 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1331320221300 its reverse (31220231331), we get a palindrome (1362540452631).

The spelling of 1331320221300 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, two hundred twenty-one thousand, three hundred".