1331320020011 has 2 divisors, whose sum is σ = 1331320020012. Its totient is φ = 1331320020010.

The previous prime is 1331320019999. The next prime is 1331320020029. The reversal of 1331320020011 is 1100200231331.

It is a weak prime.

It is an emirp because it is prime and its reverse (1100200231331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331320020011 - 2⁶ = 1331320019947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331320020061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665660010005 + 665660010006.

It is an arithmetic number, because the mean of its divisors is an integer number (665660010006).

Almost surely, 2^{1331320020011} is an apocalyptic number.

1331320020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331320020011 is an equidigital number, since it uses as much as digits as its factorization.

1331320020011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1331320020011 its reverse (1100200231331), we get a palindrome (2431520251342).

The spelling of 1331320020011 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, twenty thousand, eleven".