1201111567 has 2 divisors, whose sum is σ = 1201111568. Its totient is φ = 1201111566.

The previous prime is 1201111529. The next prime is 1201111579. The reversal of 1201111567 is 7651111021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201111567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201111507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555783 + 600555784.

It is an arithmetic number, because the mean of its divisors is an integer number (600555784).

Almost surely, 2^1201111567 is an apocalyptic number.

1201111567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201111567 is an equidigital number, since it uses as much as digits as its factorization.

1201111567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 25.

The square root of 1201111567 is about 34657.0565253312. The cubic root of 1201111567 is about 1062.9865835334.

Adding to 1201111567 its reverse (7651111021), we get a palindrome (8852222588).

The spelling of 1201111567 in words is "one billion, two hundred one million, one hundred eleven thousand, five hundred sixty-seven".