1331206021330 has 64 divisors (see below), whose sum is σ = 2444854233600. Its totient is φ = 521735385600.

The previous prime is 1331206021319. The next prime is 1331206021373. The reversal of 1331206021330 is 331206021331.

It is a junction number, because it is equal to n+sod(n) for n = 1331206021295 and 1331206021304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177941190 + ... + 177948670.

It is an arithmetic number, because the mean of its divisors is an integer number (38200847400).

Almost surely, 2^{1331206021330} is an apocalyptic number.

1331206021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331206021330 is a deficient number, since it is larger than the sum of its proper divisors (1113648212270).

1331206021330 is a wasteful number, since it uses less digits than its factorization.

1331206021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8635.

The product of its (nonzero) digits is 1944, while the sum is 25.

Subtracting from 1331206021330 its reverse (331206021331), we obtain a palindrome (999999999999).

The spelling of 1331206021330 in words is "one trillion, three hundred thirty-one billion, two hundred six million, twenty-one thousand, three hundred thirty".