1330111211021 has 2 divisors, whose sum is σ = 1330111211022. Its totient is φ = 1330111211020.

The previous prime is 1330111211003. The next prime is 1330111211101. The reversal of 1330111211021 is 1201121110331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118911221796 + 211199989225 = 1057786^2 + 459565^2 .

It is an emirp because it is prime and its reverse (1201121110331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330111211021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330111241021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665055605510 + 665055605511.

It is an arithmetic number, because the mean of its divisors is an integer number (665055605511).

Almost surely, 2^{1330111211021} is an apocalyptic number.

It is an amenable number.

1330111211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330111211021 is an equidigital number, since it uses as much as digits as its factorization.

1330111211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1330111211021 its reverse (1201121110331), we get a palindrome (2531232321352).

The spelling of 1330111211021 in words is "one trillion, three hundred thirty billion, one hundred eleven million, two hundred eleven thousand, twenty-one".