1200661141 has 2 divisors, whose sum is σ = 1200661142. Its totient is φ = 1200661140.

The previous prime is 1200661117. The next prime is 1200661169. The reversal of 1200661141 is 1411660021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1193978916 + 6682225 = 34554^2 + 2585^2 .

It is an emirp because it is prime and its reverse (1411660021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200661141 - 2¹¹ = 1200659093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200661181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600330570 + 600330571.

It is an arithmetic number, because the mean of its divisors is an integer number (600330571).

Almost surely, 2^1200661141 is an apocalyptic number.

It is an amenable number.

1200661141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200661141 is an equidigital number, since it uses as much as digits as its factorization.

1200661141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1200661141 is about 34650.5575857013. The cubic root of 1200661141 is about 1062.8536908943.

The spelling of 1200661141 in words is "one billion, two hundred million, six hundred sixty-one thousand, one hundred forty-one".