1201065511 has 2 divisors, whose sum is σ = 1201065512. Its totient is φ = 1201065510.

The previous prime is 1201065499. The next prime is 1201065529. The reversal of 1201065511 is 1155601021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1155601021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201065511 - 2¹¹ = 1201063463 is a prime.

It is a super-2 number, since 2×1201065511² = 2885116723427382242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201065311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600532755 + 600532756.

It is an arithmetic number, because the mean of its divisors is an integer number (600532756).

Almost surely, 2^1201065511 is an apocalyptic number.

1201065511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201065511 is an equidigital number, since it uses as much as digits as its factorization.

1201065511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 1201065511 is about 34656.3920655339. The cubic root of 1201065511 is about 1062.9729968034.

Adding to 1201065511 its reverse (1155601021), we get a palindrome (2356666532).

The spelling of 1201065511 in words is "one billion, two hundred one million, sixty-five thousand, five hundred eleven".