1201112089 has 2 divisors, whose sum is σ = 1201112090. Its totient is φ = 1201112088.

The previous prime is 1201112083. The next prime is 1201112131. The reversal of 1201112089 is 9802111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1035552400 + 165559689 = 32180^2 + 12867^2 .

It is an emirp because it is prime and its reverse (9802111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201112089 - 2¹¹ = 1201110041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201112083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556044 + 600556045.

It is an arithmetic number, because the mean of its divisors is an integer number (600556045).

Almost surely, 2^1201112089 is an apocalyptic number.

It is an amenable number.

1201112089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201112089 is an equidigital number, since it uses as much as digits as its factorization.

1201112089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1201112089 is about 34657.0640562642. The cubic root of 1201112089 is about 1062.9867375238.

The spelling of 1201112089 in words is "one billion, two hundred one million, one hundred twelve thousand, eighty-nine".