1330312012021 has 2 divisors, whose sum is σ = 1330312012022. Its totient is φ = 1330312012020.

The previous prime is 1330312011967. The next prime is 1330312012027. The reversal of 1330312012021 is 1202102130331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1310498352900 + 19813659121 = 1144770^2 + 140761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330312012021 - 2¹⁵ = 1330311979253 is a prime.

It is a super-2 number, since 2×1330312012021² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1330312012021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330312012027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665156006010 + 665156006011.

It is an arithmetic number, because the mean of its divisors is an integer number (665156006011).

Almost surely, 2^{1330312012021} is an apocalyptic number.

It is an amenable number.

1330312012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330312012021 is an equidigital number, since it uses as much as digits as its factorization.

1330312012021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1330312012021 its reverse (1202102130331), we get a palindrome (2532414142352).

The spelling of 1330312012021 in words is "one trillion, three hundred thirty billion, three hundred twelve million, twelve thousand, twenty-one".