1331320221030 has 32 divisors (see below), whose sum is σ = 3196077276384. Its totient is φ = 354917753856.

The previous prime is 1331320221013. The next prime is 1331320221037. The reversal of 1331320221030 is 301220231331.

It is a junction number, because it is equal to n+sod(n) for n = 1331320220988 and 1331320221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331320221037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6203467 + ... + 6414486.

It is an arithmetic number, because the mean of its divisors is an integer number (99877414887).

Almost surely, 2^{1331320221030} is an apocalyptic number.

1331320221030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331320221030 is an abundant number, since it is smaller than the sum of its proper divisors (1864757055354).

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

1331320221030 is a wasteful number, since it uses less digits than its factorization.

1331320221030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12621480.

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

Adding to 1331320221030 its reverse (301220231331), we get a palindrome (1632540452361).

The spelling of 1331320221030 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, two hundred twenty-one thousand, thirty".