1301331220009 has 2 divisors, whose sum is σ = 1301331220010. Its totient is φ = 1301331220008.

The previous prime is 1301331219931. The next prime is 1301331220019. The reversal of 1301331220009 is 9000221331031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1068980227225 + 232350992784 = 1033915^2 + 482028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301331220009 - 2²¹ = 1301329122857 is a prime.

It is a super-2 number, since 2×1301331220009² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1301331220019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650665610004 + 650665610005.

It is an arithmetic number, because the mean of its divisors is an integer number (650665610005).

Almost surely, 2^{1301331220009} is an apocalyptic number.

It is an amenable number.

1301331220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301331220009 is an equidigital number, since it uses as much as digits as its factorization.

1301331220009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 1301331220009 in words is "one trillion, three hundred one billion, three hundred thirty-one million, two hundred twenty thousand, nine".