1331212010281 has 2 divisors, whose sum is σ = 1331212010282. Its totient is φ = 1331212010280.

The previous prime is 1331212010269. The next prime is 1331212010347. The reversal of 1331212010281 is 1820102121331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068089178256 + 263122832025 = 1033484^2 + 512955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331212010281 - 2²³ = 1331203621673 is a prime.

It is a super-2 number, since 2×1331212010281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1331212010251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665606005140 + 665606005141.

It is an arithmetic number, because the mean of its divisors is an integer number (665606005141).

Almost surely, 2^{1331212010281} is an apocalyptic number.

It is an amenable number.

1331212010281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331212010281 is an equidigital number, since it uses as much as digits as its factorization.

1331212010281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 1331212010281 in words is "one trillion, three hundred thirty-one billion, two hundred twelve million, ten thousand, two hundred eighty-one".