1311102061201 has 2 divisors, whose sum is σ = 1311102061202. Its totient is φ = 1311102061200.

The previous prime is 1311102061177. The next prime is 1311102061207. The reversal of 1311102061201 is 1021602011131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016969385601 + 294132675600 = 1008449^2 + 542340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311102061201 - 2²³ = 1311093672593 is a prime.

It is a super-2 number, since 2×1311102061201² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1311102061207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655551030600 + 655551030601.

It is an arithmetic number, because the mean of its divisors is an integer number (655551030601).

Almost surely, 2^{1311102061201} is an apocalyptic number.

It is an amenable number.

1311102061201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311102061201 is an equidigital number, since it uses as much as digits as its factorization.

1311102061201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1311102061201 its reverse (1021602011131), we get a palindrome (2332704072332).

The spelling of 1311102061201 in words is "one trillion, three hundred eleven billion, one hundred two million, sixty-one thousand, two hundred one".